The latest 5.7 kernel (5.7.9-1) contains patches from Valve, which are supposed to make Proton games perform better.
These patches are not a part of the mainline Linux kernel, they have not been vetted nor approved by the kernel developers.
Ideally, a kernel with these patches ought to be a separate package, but if that is not possible, there ought to be a package for 5.7 kernel without them. As someone who does not use either Proton or Steam, I have no benefit from these patches, and Valve has a record of being a rather untrustworthy company, and not respecting users' privacy, so an option for users who do not wish to use these kernel patches is, in my opinion, necessary.
Before these patches get included in the mainline kernel, I don't think they can be deemed trustworthy. And while they are a welcome addition to gamers who accept the risk, there ought to exist a simple option for those who do not.
Following a suggestion of @eugen-b, here is a poll to gauge the (lack of) interest for such a feature.
Would you find such a kernel package useful?