With the adaptive under-volt I've been running the whole time, I haven't seen my voltage run that high and I haven't had any stability issues with my 10/2022 13900k. It probably helps that I keep it quite cool, but I definitely did a few high power runs going for benchmark improvements, so I suppose I'm pretty lucky. Most of the time it games at 80-150W-max. I'm guessing that the rate of susceptible CPUs was up and down during the whole production run and Intel not doing a great job mandating or controlling voltages with motherboard partners didn't help, but maybe I got a lucky one.
In any case, I have no hope for a BIOS update from EVGA (as they already said there wouldn't be another one), so I'm just going to leave well enough alone until there's an issue or something worth upgrading for comes out. I would have had to buy a new board for whatever that is anyway.