But theory is that it will trigger the MOASS because something something

Since the "sneeze" in January, it's been a non-stop war between investors and short hedge funds (SHF). As time has passed, we as a community have learned how the SHF have managed to drag this out, and delay the squeeze. As long as "your" shares are with a broker (Fidelity, or whoever) they continue to be loaned out to SHF, so we've been getting nowhere, just kicking the can down the road.

We are now directly registering with ComputerShare, which registers your shares in your name, and makes them unavailable to be loaned out to anyone else. This just began in mass over the past week or so, and the ratio of dark pool (bad) buying is already decreasing. When the supply of shares available to be loaned out dries up, then SHF can no longer delay the squeeze from happening, like they have been doing all year.