Joking or alluding to it is seemingly fine. Just don't straight up say "kill billionaires" like Drag, I guess. Because plenty of others, including myself, have been making jokes with the same sentiment and we're not banned nor have had our comments removed.
With the way Drag usually talks in 3rd person, I kinda feel like it's just an excuse to ban the dude because someone finds him annoying. This is also the first time I am seeing FlyingSquid being called out for banning someone, and it actually isn't just someone who said some bigoted shit and got mad at facing consequences.