RotMG has Asian servers and I’m fairly certain we have at least some Chinese members in the community, so this could indeed affect the game.
However, as some people on the NeoGaf thread you linked pointed out, game developers can just put up official drop rates exclusively for the Chinese and then have different probabilities for everyone else.
This is one of the few times I agree with the Chinese government. I get why gambling exists, I just think it needs more transparency, especially when targeted at kids.
Speaking of which, considering Mike Pence’s track record, have you American players considered the possibility he might outlaw games with loot box-type features, including RotMG?