Had my ps5 literally days over a year now, conveniently just out of warranty although I'm not sure that covers controllers anyway and my controller went from being absolutely fine to basically unplayable stick drift within the space of just 3 days playing Diablo 4.
Left analogue stick started inching to the left slightly which was really frustrating as any fast travel in Diablo requires you to stand completely still and the slightest movement cancels it. I could kind of click it in and out and re-center it and it became fine, 3 days later it has me running to the left constantly.
I think I had 3 ps4 controllers in total from release of that console until last year, which must be well over a decade, with 2 of them knackered and 1 getting a bit dodgy but still fine, had varying degrees of success taking them apart and attempting to clean/fix them, first few times I had some improvement but not a total fix then eventually after a few times repeating it, they were goners so reluctantly decided to disassemble my 1 and only ps5 controller. Around the potentiometer there was loads of black dirt which im led to believe is the result of wearing down of carbon over time. Cleaned it all out and used a alcohol wipe along the connection, then spent about an hour trying to figure out where this tiny little thing that appeared from nowhere went which turned out to be underneath the button for the microphone and not anywhere near the motherboard as I had assumed it came from.
Stuck it all back together turned it on in hope... and made it 100 times worse. it was permanently pushed left and wouldn't even move right now, did the whole thing a second time and by some miracle it's working and the drift at least for now, is gone. I suspect it will be temporary and I'll have to spend £70 on a new one within weeks but at least it's functioning for now.
They'll be a lawsuit soon enough against Sony and they'll lose. They intentionally make them prone to fail after an increasingly shorter time frame so that you're forced to buy a brand new one every year.