This is an absurd critique of the actual stock and bond market and should not be taken seriously by anyone as a real comparison.
A stock is a certificate that entitles you to a piece of a company. Companies that, on the whole, are responsible for literally...everything we see as the modern world. These companies produce oil (Exxon), credit infrastructure (Visa), cars (Ford), phones (Google, Apple), couches (Wayfair), TVs (Samsung), and home goods (Home Depot).
Ownership, even fractional ownership, of a company that produces things entitles you to the profits that a company makes off of that production. These profits are often paid out in dividends, but are more frequently paid out in the form of buybacks of stock by the company itself in order to increase the share price, allowing individuals to avoid the tax complications that cash dividends portend.
Bitcoin is something that is completely unproductive, and is in all likelihood, completely worthless. It's really no different than the vast majority of %&$coins out there, it just happens to be the most widely adopted one, propped up on nonsensical hype and only worth anything in that it can be converted to dollars to buy...valuable things. Ownership of a bitcoin is even less than ownership of the tulips of the 1600s, because in that case, you at least get a tulip.