Proton is getting there but even so, it doesn't make Linux+Proton a drop-in replacement for people who have used Windows all their lives.

For people with more technical background, who are enthusiasts about computers and software - sure. For a lot of casual users who need things to 'just work' the way they always have, asking them to swap to an entirely new OS is nonsense.

I'm considering it myself but even with years of experience on Linux I'm still cautious because of a lot of edge cases where something I use now wouldn't work or wouldn't work well in Linux.