Do you think most games might perform better on linux in the future?

maybe, depends on steamOS hardware adoption rate. You’re far more likely going to see windows regress in performance rather than linux get better upper tier performance on average (imo)

When game makers put more effort towards optimising for linux considering linux has less bloatware etc?

theyll optimize for linux whent he market grows enough for it, which I personalyl believe will only happen when Linux gets at least ~30% of the steam hardware survey OS market.

not many devs will spend time to cater to 2% of the steam market.