I used OS/2 from v2.0 through to v4 ("Warp"). But once IBM made it clear it had given up on the desktop, I have up on IBM. The deal sealed when it became impossible to install OS/2 4 on new hardware. Plus it's a 32-bit OS....
I went to Linux (and then ChromeOS and Android flavours).
I see ArcaOS 5.0 lacks USB3 support? OK.
I might try it on an old laptop, but for sheet usability Remix OS offers me the same thing, more or less, as well as access to virtually all Android apps.