I'll address each of these, as I have some time today.
Digital wallets have never been, and have no plans to be secure in any fashion. This is addressed in the linked documentary, but all digital wallets are currently vulnerable to attack if someone knows your digital wallet address, which is all publicly available on the blockchain, and can never be hidden or deleted since it's publicly available and immutable, as you say.
Literally, you can drop a token into someone's wallet and wait for them to activate it and steal someone's money. This is a common scam. Adoption of digital wallets will
never happen by anyone who values their property and privacy. It's pure fantasy. We already have digital wallets. They're called banks. Those banks have a huge incentive to keep your money secure from attacks, and employ billions of dollars to create the security systems to do that. If someone opens a digital wallet and puts assets in it, they forgo all the protection that give banks (digital wallets) their entire value to consumers.
NFTs do function as a digital flex, but only in the sense that they act as a marketing tool for cryptocurrency itself. It's easy for a few crypto whales to run up the value of an NFT by hyping it and subsequently rug pulling any normal person who wants to buy one. There is basically no use case for any of the digital art NFTs, as they are simply a pointer on a web address that indicates that at some point, you bought something, and everyone knows you bought it (except no one of any substance cares about it at all. It's basically showing someone a receipt for a Rolex instead of the watch itself, pretty unimpressive to say the least.)
What you're describing in Roblox are not NFTs. They're just run of the mill DLC that every game designed today uses to take advantage of people who want to add some sort of "unique" flair to their digital avatars or pay to win in their respective game universes. It's been the main business model of most video games, but functionally revolves only around USDs. These people aren't charging you in crypto because transactions this small make that medium of exchange all but useless and more expensive than its worth in processing time and/or gas fees.
Using this for medical records, licenses, or personal documents on a publicly available and easily accessible document like the blockchain is a horrible, horrible idea for so many reasons I don't know where to begin. Anyone who would trust their personal info to the blockchain in the form of a digital wallet or rolodex that is vulnerable to so many means of attack is a complete idiot, and this will never see widespread adoption except by people who have a hankering for the worst cases of identity theft you'll ever see.
Not to mention that the blockchain is not immutable in the sense that there's only one, and never has been. It's been forked and rolled back a number of times in the past. There's zero reason it couldn't happen again. In fact, the blockchain has been hardforked more than a handful of times in just under a decade.
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This stuff is falling out of favor because it does literally everything an average consumer would want from it worse than systems we already have, and makes average consumers extremely vulnerable to identity theft and fraud. In no world except that of techno-fetishist narcissists are these ideas taken seriously, and that's for the good of everyone in the developed world.
I see crypto people's obsession with this as a psychological confabulation to convince themselves of the value of something that is ultimately a speculative asset. They have to convince themselves of all the use cases in a religious like fashion to negotiate the mental block they have about pouring money into a useless internet token. Everything that springs from it is driven by wealthy people who have vested interests to advertise this product to foolish average consumers who see this as their way to get rich because "It's the future."
The great thing about this state of mind is you can act like rapturists who constantly preach that the end of the world is coming in year 20xx. It's an inherently unfalsifiable thesis because you can always just point to the future and say "It'll happen soon, just you wait!" It's similar to the religious tendencies that certain meme stock followers or collector communities or doomsday preppers have.
I'm not saying that you're a fool, but I am saying that anyone with real sense and knowledge of this stuff is just observing the "use cases" that people put forth and laughing at them. You're just like anyone else in the community, blinded by promises of a utopian future from people who have a vested interest in convincing you that it's coming. Anyone can fall prey to this stuff, so I have more sympathy than anything else for people who look at this as a real future. You're obviously free to spend your money on what you want, and I hope it does pay off for you someday and you can retire and say "I was right." My guess is none of that fancy future will happen, even if you do get rich from speculating on internet tokens.
We'll easily be able to revisit this thread in 10 or 20 years and see how it went.
