There's been a similar amount of shutdown on 5G tower conspiracies after they resulted in vandalization, arson and even a shooting. 17 towers were attacked in New Zeland alone[1] for example, and plenty elsewhere.[2] As a result 5G groups have been banned on Facebook and the like. Things like this that has real impact is for better or worse pretty quickly suppressed on most platforms. If flat earthers started setting tankers on fire or something they'd probably get the same treatment.

[1]https://www.businessinsider.com/17-cell-towers-have-been-van...

[2]https://www.theverge.com/2020/6/3/21276912/5g-conspiracy-the...