The Mac Pro lynch mob will be nonexistent soon (sad).
Agreed, I had the 4,1 then 5,1 for many years when they first came out even from the factory they were fairly noisy. Apple got better with cooling mid 2010s.
I genuinely do not want to build a PC, even a small SFFPC just for gaming (i rarely do it) so I may just keep the Mac Pro as a Windows machine once I get the M5 Mac Studio (Max or Ultra). I just need a decent KVM setup so I can switch between them easily on my dual Studio Displays and Magic Keyboard (might have to run them via wire) + Logitech 502 mouse (USB, so it's easy). I tend to keep my desktop simple, and not overcomplicate things since I switch between workstations a lot (sometimes I have to freelance so I don't have a chance to customize things fully).