I have 6 joycon pairs, a Hori d-pad one and a pro controller. The left joycon of one of those pairs drifted, and I replaced the stick, and it is working fine now. The Hori joycon with D-Pad is drifting, and I did nothing about it (cant calibrate third party controllers).
The right joycon from the same set of the defective stick one has other (minor) problem: the indicator lights do not work.
The other joycons and the pro controller are working fine.
In the end I think Nintendo will get substantial defeats on court, because the issue is real.