"Ryzen", per se', has no issues that I can see. Apart from the fact that for the last 20 months of service my x570 Aorus Master/3900X/5700XT has suffered no USB disconnect issues, no crackling sound, and no PCIe4 issues--with the PCIe4 5700XT and a recently added Samsung 980 Pro boot drive (PCie4.) Obviously, these are not "Ryzen issues" since most Ryzen owners do not experience them--it seems to be a fairly small group, according to AMD. And it seems mostly related to Zen3--or for people who for some crazy reason choose USB sound cards (Ugh!)
Also, just for clarification, for the people experiencing these problems, it has zero to do with any Ryzen CPU. Zero. AMD has said they will issue an AGESA fix shortly. AGESA does not equal "Ryzen." Don't you just love how Internet media enjoys blowing up very small problems into gargantuan sizes? The quest for page hits thunders on...
In passing, for the past year my Ryzen system cold boots in ~10-12 seconds, including post times (2-4 secs). If someone has 15 seconds of post it's only because he has misconfigured something in his bios that the system must take time to correct each boot before the boot can continue. Operator Error, in other words. I know this because in times past I've done it myself.