AGESA updates on EPYC have been a big deal. Remember, EPYC is considerably more complex than Ryzen or TR.
I'm already on the camp of the people that believes that x86 is so obscenely complex that is nearly impossible to debug all the possible edge cases. Intel themselves ocasionally have
an elusive errata, and their architectural changes have not been as dramatic as AMD going from a mature Excavator to first generation Zen.
What I'm personally worried about while I bite my fingernails, is how much time it takes for them to fix these things that ocasionally pop, because in a worst case scenario it could be a Hardware bug that can't be fixed by microcode, or incurs a hefty performance penalty like the Barcelona TLB bug. I'm quite confident that AMD will fix things as quick as possible and probably in a year no one will remember what early Ryzen was like, but as I can't get into a cryostasis chamber, I'l have to go through this emotional rollercoaster while I cross my fingers that all these things will get fixed.
The other problem is that there are a whole bunch of people that are already rather biased against AMD or considers them a second class manufacturer, basically, those conservative people in the "No one got fired for buying IBM" camp that currently goes Intel only (I can't blame them after Bulldozer!). These potentially minor issues are making that some people gets a bad early impresion, and it is rather hard to convince them to go AMD when you have several Threads in Linux communities complaining about the segfaults on Ryzen, even through sometimes Intel has its screws up, too. But these hurts AMD much more.
I wish that AMD could pull out a perfect launch...