As reiterated by the OP, the proposal is just a proposal and was proposed with heaps of lead time probably because they expected it to be controversial.

As also mentioned, heaps of volunteer time is spent maintaining the packages where most are barely used (even for gaming).

However, it does not seem like there is a viable alternative. Many comments say the suggested alternative, WINE's WoW64, does not work for all games.

I can see both sides here. Fedora maintainers says "this is so much work!" and (mostly) gamers saying "But older games will stop working!".

The response from the Bazzite guy does seem overblown to me. I would think the first step is to work out the impact, as I haven't seen anyone quantify what proportion of games are affected and if there are alternatives like emulation.