Fog of War is the important bit here. The big difference between this and a pump and dump is that the FOW here is retail investors not having great SI data. In theory, a retail investor could still make this work in a "safe" way (safe used very liberally); it would be a hell of a maneuver for everyone with a short position to somehow close their position in a single day before Joe Retailer is able to get any word on what the outstanding SI is. In a pump and dump, your FOW/missing information is when the party working to pump the price decides the gig is up, which is effectively impossible to know unless you are that party.
A lot of retail investors with four days of experience under their belt are going to lose their ass by trying to suss out their exit intuitively, but for those that did their homework, this could work. For many, it already has. The argument that this needs to stop because uneducated retail investors can get burned can be reduced to absurdity -- "retail traders can vaporize their life savings by going long on a company facing imminent bankruptcy, so they shouldn't be allowed to trade with even the most rudimentary of instruments."
Price being in freefall doesn't affect the huge number of people that were in well under that, the way this strategy is working, or that people somehow still think that going short on this is anything other than a lottery ticket play because of "muh fundamentals."
And... The price is in freefall in the last minutes of trading today.