It's the best game store for the paying customer on Linux by a long shot

Store: that's a strawman argument; depends on what you prioritize.

Launcher: not by a long shot. And it's ugly too and themes are mostly broken now.

You can roll back to previous versions

Sometimes. For a while. Which doesn't help, if the major modder has given up, because of weekly forced breaking updates of the game. Can't just keep the version that works, even though games are one kind of software where updates are not critical.

1 would be true if the store didn’t include the launcher