I could see how one might come away with this opinion but if you reflect on the nature of video games the fact of the matter is they're inherently proprietary software. Given that video games are more art than function, I think I'm okay with that too.
If we accept that video games are proprietary, whether or not they target a native Linux runtime (which no standard exists) or a Valve blessed windows emulation runtime hardly matters. We as users have no power to build these applications for a desired runtime and it's unreasonable to expect publishers to work against an undefined moving target. History has already proven that this tends to be a worse experience in the long term for Linux users and even more recently native builds can be worse than Proton builds.
If we accept that video games are proprietary, whether or not they target a native Linux runtime (which no standard exists) or a Valve blessed windows emulation runtime hardly matters. We as users have no power to build these applications for a desired runtime and it's unreasonable to expect publishers to work against an undefined moving target. History has already proven that this tends to be a worse experience in the long term for Linux users and even more recently native builds can be worse than Proton builds.