I have fairly good experience with this problem. I have owned both a Core i5-13500 and Core i7-14700 (the i7 was an upgrade from the i5 earlier this year). Both CPUs were installed in the same motherboard and same chassis. The motherboard was an ASUS ROG STRIX B760-I mini-ITX board. I was good about staying current with the BIOS. I did the minimal overclocking of the CPU provided by this BIOS for non-K parts. I also overclocked the RAM from 4800 -> 5600 MT/s in the BIOS. I am using Team Group DDR5 RAM. All components in this PC have been the same except the two CPUs mentioned above.
Anyway I have had zero problems with either of these CPUs. When I first heard about instability issues it seemed that the issues were related to overclocking/volting the CPU, so I immediately disabled any overclocking and installed a new BIOS back in April this year which included an update to the microcode version 123. Still things were stable in this PC.
Today I finally got around to installing the latest available ASUS BIOS for this motherboard which is version 1661 and includes microcode update 0x125. Again, I am not overclocking the CPU, but I am still overclocking the RAM to 5600. Again zero instability issues. I ran Cinebench R24 after this latest update for 10 minutes and got multi-core score of 1572. Geekbench 6 scores are slightly improved from before the latest BIOS update. The best score I got today is:
Anyway, I gotta say, from my perspective this whole thing is overblown... I just haven't had any problems with these two supposedly affected CPUs. They are both 65W variants and boost up to over 156w and 225w respectively. They've been rock solid ever since I put this PC together from (all new) parts.