I am/was an early adopter of both AM4 and AM5 and while AM4 had some teething problems regarding memory speeds and compatibility, there were otherwise relatively few issues for a brand new platform. Don’t forget that not much has changed at Intel for a long time, but things like Nehalem or Haswell also had their problems. The first 6 months you had to carefully check the QVLs (and mainly make sure that your Samsung B-die had ), but otherwise most had no problems coming from AMD. I have been able to run at 3200 MT/s from day 1 and the only problem I have encountered is that the second USB controller (ASMedia) on my C6H failed in 2021, so I had to avoid a number of USB ports because they would otherwise be used for a blue screen. Switched to AM5 in 2022 and had 0.0 problems at hardware level (see below).
I have now replaced that setup with an ITX board + 7800X3D and again no problems with the CPU, memory… but with the poorly constructed BIOS from ASUS (the way they implement PBO is incredibly stupid) and the extremely worthless Intel I225 /I226 that should simply no longer be sold*. By chance, I always had Realtek NICs before and I didn’t expect that that would be a problem.
The big problem is that AGESA is only a base. What some manufacturers do with their BIOS is just weird and often causes problems. AM4 had teething problems, but with AM5 I’ve seen very few issues that could actually come from AMD, let alone that it does. AM5 mainly has the…box problem? but that kind of thing just happens every now and then, also at Intel (or Nvidia, which also had that a few years ago) 
off topic:
* I am referring to the fact that the NIC (226 is simply 225) is not spec-compliant, which means that you may experience a dropped connection with some switches/routers. Known problem, major mistake by Intel that apparently cannot be solved with firmware.
