Unpopular opinion coming up (but today seems to be in general a great day for a lot of people so here goes nothing...)
I've really objected to this whole notion of "interview hoarding" all season. The implication that the top applicants "hoarded" and "took away chances for other people" has an aftertaste of entitlement that I'm not entirely sure should have been echoed and amplified throughout the season. Those top applicants worked their butts off to earn those step/comlex scores, get those honors, publish those papers. They deserve every interview invitation they worked for and should not have been made to feel bad for wanting to accept those interviews. What people also tend to forget is the competition is stiff for those spots at the top programs, and those applicants probably don't have a sense of safety either. I mean can you imagine banking on matching at MGH/BWH/Hopkins/Stanford/Mayo/etc.? Everyone would tell you you're foolish and apply to some back-ups in there. So why is it such a surprise that the top applicants went on more interviews this year?
Some PCs and residents in our SDN/reddit communities have noticed that there have been fewer cancellations (almost none at so many programs). I would not be surprised if the reality was that every single year, these top applicants would have gotten the same enviable number of IVs at both top and mid-tier programs but were limited by finances and scheduling. What happened this year was the time and financial barriers have been removed. The otherwise-really-solid-but-not-tippy-top applicants who didn't get the IVs they would normally see in a different year - was it probably because the top applicants didn't cancel some IVs? Probably so. But that doesn't mean the "hoarders" took something away; it is more likely the case that they were finally able to grasp that opportunity they wanted unencumbered by ghastly cost of an in-person season.
This may also mean that programs did not alter their normal behaviors. There's a lot of speculation around mid-tier programs inviting top-tier candidates they had no business inviting because they're unlikely to come. What if programs actually always invited those applicants and then get turned down by them? Suddenly this year, those top applicants might finally take a look at those mid-tier programs that might be a great fit otherwise, since it's now feasible without taking away the resources needed to fly to a top program. Programs are always fighting for top talent, and why should they stop? I bet so many applicants this year too were surprised/impressed by some programs that weren't really on their radar and conversely disappointed by programs they were really excited about.
I recognize that this situation is far far far from ideal for everyone, but this is an important conversation to have. One PD mentioned that the AAMC was really scrutinizing how the virtual format plays out this year because being able to do all virtual interviews might be a way to address the SES disparity in this process. Affluent applicants are generally able to apply, take, and rank more programs compared to their financially challenged counterparts. This virtual reality might be the norm going forward, scary as it sounds (I agree with @efle - dumpster fire indeed), but where the blame has been placed all season was misguided IMHO. I think nobody knew how to function, deans didn't know how to give guidance, applicants didn't know if the charting outcomes would hold true, and programs couldn't have known who would accept/decline their IVs. After the dust settles, I hope everyone takes a deep breath and some braniacs will figure out how to optimize this system.