I think most of the people who really care about game performance aren't people playing games like you do. They are either playing AAA games where the graphics quality is paramount, or competitive games where performance is useful for being competitive.
To give a particular example, I started playing GTAV on Windows after building a new PC since I had no spare drives. After finally installing Linux I decided to try GTAV on Linux just to see how well it would run. And it runs amazingly well, and yes, it runs a few percent points slower than Windows, but the only tradeoff I did was slightly increase FSR4 and the game still looks amazing. I didn't really notice any graphics issues, especially not during actual gameplay (if I stayed at the same place and started to nitpick I could notice differences).
I select games based on ProtonDB. There’s always constraints and I’m cool with the limitations that this brings. BF6 is a no-go due to its anticheat tool, no problem. Got lots of other choices.
Happy to not give EA any money if they're so set on shoving online play and therefore anticheat down the players throats.
Grateful that Steam allows easy refunds.
What other goal is there than maximizing your subjective enjoyment of the game?
Sure if you're a professional streamer, your feels are maybe less important than engagement metrics but if you're just a casual?
Dude just play what feels good. It's literally the best and only metric.