Joysticks: Probably Still Drifty
Joy-Con joysticks use a potentiometer to read the voltage at a wiper that slides across a strip of resistive material. That material wears down over time, or plastic and dust can dirty the sensors.
Stick drift is a huge problem with other Switch models. One survey found that 40% of Switch owners had problems with their Joy-Cons drifting, and things didn’t get any better with the Lite or OLED editions. After a bunch of lawsuits, Nintendo’s president even admitted it and apologized, setting up a free repair program for customers in some parts of the world.
I remember during the initial console reveal, basically the only thing they had to say was that the sticks are larger and smoother (in motion, not the caps themselves).
I don’t know if they mentioned much else later, but they were very tacit about their durability/longevity. I don’t have much hope that things will be better, at any rate. I still bought a Switch 2, because I know it will still bring me joy to play, but as much as I enjoyed the comfort of playing with a Joycon in each hand, I’ve learned from the original Switch to avoid using the Joycons where possible and opt for a separate controller when playing docked (I’m just using the Pro Controllers I have left over from my original Switch).