AFAIK Gitea incorporated as a for-profit (which was supported), but there was some perceived(not intended to throw shade on any side here, just keeping it neutral) shady-ness from the perspective of the community. You can read more here in the open letter: https://gitea-open-letter.coding.social/

And I feel this is an escalating problem. Sound mixing is generally horrible in both games and movies/TV. Unless you blow out your speakers during the higher peaks, you've got no chance of hearing dialogue.

Does anyone have any clue to why this is such a well-spread phenomenon? Why is it like this? I mean, I get it (kinda) at a cinema, but I think it's way overplayed there as well.

A lot of good tips here, but you should have a look at Endless Sky! Really cool space game
https://github.com/endless-sky/endless-sky