I think its mostly overblown. The only two things I think is any real issue is screen scratching from the dock and the joy con connectivity.
With the screen scratching its a good idea to get a screen protector anyways. And several reviewers reported they had no such scratching. Even Reggie commented saying when they first heard it they contacted the Switch tour group and he was told there were none on the units used. So it sounds like a faulty batch docks and/or being to rough. Still its a small oversight to put something like rubber or felt in the dock.
The left joy con issue I only had once. And I was holding the controller unnaturally so to say because I was shifting in my seat.