Is it? by that line of interpretation, all of LiL's supporters could be considered children with money then, as they don't have enough patience to wait for the aforementioned two weeks, and instead pay for the early access - even though it is leaked minutes after release.
or, one could also say that someone that doesn't play the leaked version, and instead chooses to wait for the official release has the need to prove to who knows who that they're better than pirates, which could also be called childish if coming from a position of bragging about it.
Any of these is a rather narrow and poor generalization imo though, people are more complicated than that. My official stance is that I support anyone that wants to and can support Selebus, as I wish to see this game finished. I see any kind of generalization, including calling them childish, as a sub-optimal path to achieve that result.
If they can and want to support him, good. If not, they'll always be welcome to discuss the game here without judgements as to how they're getting their hands on it. As I said before, any player is a potential supporter because this is month to month, and Selebus was dumb to not capitalize on that, rather than try to fight piracy and end up alienating them (and also his prior or soon to be prior supporters through his antics).