As a recent refugee from W10, I agree. Not shitting on Lutris since it did kind of worked, so it might have been a matter of playing with some settings, but heroic just worked.

Lutris on a fresh bazzite install: install GOG launcher and sign in. Crappy launcher to install the game (same as windows). Install Witcher 3, start playing. Find out the installer never reported success. Next time it launches it throws an error because the game was not installed. Default is to not cache the installer files. Multi-GB download starts again.

Heroic on the same setup (after the above): sign in to GOG. Get black and white icons for all games in the platform. Double click or right click (can’t remember which) to install. Game installs and the icon is in color now. Double click, it starts and works.