Godot

free as in freedom != free as in 'free beer'

I feel the issue is not so much that you can buy/sell software, but that the Godot Asset store is proprietary, and being advertised alongside a project that was attractive for being "free and open source".

This also potentially could cause a conflict of interests when it comes to making improvements / promoting the previously existing Godot Asset Library (which was FOSS).

Maybe the game should be free too right?

Well, the more of it you make it FLOSS the further away from enshittification you get.

I've purchased every free and open source game on Steam that has been put there with a price tag precisely because I do prefer when they are open.. in the same way that I prefer Godot over Unity because of being open, in the same way I would prefer an open source Steam alternative if it truly existed (and I don't mean a repo to download games.. that's not what steam is.. I mean a store with support for purchases too, one that can be navigated from the couch, with controller support, with cloud saves, with input API and controller remaps per game, with friend group integration and chat, etc etc).

It's also a matter of perspective.. you'll see complains when something gets shittier and you'll see praise when something gets less shitty.. but just because there are complains in one place and praise in another does not necessarily mean the one getting praised is in a better position. I may complain about an additive added to my juice, and I may praise if the flour used in highly-processed mcnuggets is organic, but that does not mean the juice is worse than the mcnugget.. it just means that the juice is getting shittier and the mcnugget is getting less shitty.