Experience: I have a bit of experience with Linux. I started around 2008, distro-hopped weekly, decided on Debian until around 2011, when I switched to Windows as I started getting interested in gaming. Tried switching back around 2015, this time using Arch Linux for about a month, but had some bad experiences with gaming and switched back to Windows. I have had a Debian and Arch VM in Virtual Box since then for testing different applications and a more coherent environment to work with servers.
Understanding: Which brings me to now, I am really interested in using Linux for gaming, I know there is Proton from Valve and that they have been really pushing Linux gaming forward with it.
Thoughts: I have been contemplating dual booting by installing Debian to an SSD and simply using the UEFI boot menu to choose instead of having to install to the EFI of Windows.
I guess, I should just do it, as it won't affect my Windows installation, and I could test different games and if all works well, move over. This would also allow me to try different distributions, though my heart is for Debian, I even like Debian Unstable.
Note: I am sorry for the wall of text, I am just kind of anxious I guess.
Anti-Cheat was one of the major things that pushed me back to Windows for gaming. They often aren't compatible, invalidating the newly proton-compatible game
Yeah that's big area that's shaky with proton. Fortunately a few games have been adding support (halo MCC recently did). And for me, I typically only play singleplayer games - the most modern multiplayer game I play is titanfall 2 which works great on Linux.
But for someone who does play those games, I can see how the lack of them can be a huge obstacle.