I have 2 switches. The first one started to drift within the first year and has not gone away no matter what i have attempted. It is useless in handheld mode for lots of games.
I do not plan to buy another set of joycons for it for this to possibly happen again. Mainly used docked with pro controller now or on tabletop with pro controller.
The second one purchased approximately 6 months ago and so far so good. I hope it does not have the same fate as the other one.