Epyc's idle power consumption is fairly high but Ryzen's isn't. The more workstation-focused Threadripper & Threadripper Pro is also still significantly better than Epyc here.
Sure, but 22W is still a trivial amount of heat & power in the form factor of a desktop system. Fans don't need to spin for that (or if they do it's at the lowest RPM - still silent). Fans do need to spin, and with some moderate oomph, to handle 80W, though.
TBD on TR Pro using Zen 3, but TR Pro on Zen 2 appears to be a bit better than Epyc currently. I'd guess because optimizing idle power draw on TR Pro is a more worthwhile use of time vs. servers, where your fans are running at a bajillion RPM always anyway and you're not idle as much.