I've tried to "fix" them with no results and I already have a Pro controller that I use on dock mode, funny enough the pro started drfting too but I just had to use some compressed air and everything was back to normal, I wish it was the same with the joycons tho.
Now I admit that if nothing worked, then yeah, you're kinda left in a difficult position. Maybe you should follow that class action suit in that case, you could potentially get something out of it.
Honestly though, I really do hope Nintendo themselves make a statement on this issue that has plague so many people now or at least prepare a whole redesign with better structure around the sticks so that it won't cuz such problems anymore ...
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