I never had the connectivity issue, but I now have three left joycons that drift up/right. I've been seeing videos popping up about how to fix this lately, so it must be a common problem.
In my experience it tends to set in after something like 80 hours of use, which is pretty unacceptable if other people are experiencing a similar failure timeframe. I don't think I'm particularly rough with them either.
The next revision HAS to address these dang joycon issues... they're just too fragile at the moment.
I'm going to attempt repairing mine.