The Linux gaming world doesn't need more fragmentation of options and configurations. The work behind it is undeniable and worth appreciating, Proton GE staying ahead of Proton is commendable, but please, get on the same page with Valve and follow a single development path.
This is literally how open source development is meant to work.
Having a fork which has features not on main, which main may never adopt, is what allows for both teams to evaluate what the other project has and accept or reject those.
Proton itself is a fork of wine. Do you think they need to end this fragmentation and return to wine?
I don't. It's precisely the proton work valve has done which has further pushed forward wine. And before that it was the code weavers fork that further advanced wine.
I get your point, but Valve now has Steam on Linux as a maturing product where users are expected to spend money. Having them unclear on whether to use Proton Stable, Proton Experimental, or go down the rabbit hole of adding Proton GE doesn't strike me as a realistic model for the average end user.
Maybe Valve should reach out to GloriousEggroll and offer Proton GE as an official option while those improvements make their way into the mainline release. That way you get the best of both worlds: the flexibility of the fork, without burdening regular users with the decision.
