Steam has now officially stopped supporting Windows 7, Windows 8, and Windows 8.1.::95.57 percent of surveyed Steam users are already on Windows 10 and 11, with nearly 2 percent of the remainder on Linux and 1.5 percent on Mac — so we may be talking about fewer than 1 percent of users on these older Windows builds. Older versions of MacOS will also lose support on February 15th, just a month and a half from now. Correction: It’s macOS 10.13 and 10.14 that are losing support. Not macOS period.
Maybe the opinion of someone who switched recently would be more useful to you. I’m probably a little biased since I’ve been exclusively running linux for almost 20 years now
It’s very easy to create a bootable USB stick to just try it out and, if you have enough hard disk to spare and your experience is fine, make it dual boot. This way you can assess if it works for you or not