I'm assuming that this comment was made with tongue in cheek??

For the most part, it did. Still, most of us have had paint rubbed off of the inboard side of the left chainstay after the axle slipped. This was more of a problem with chromed dropouts. The problem was largely fixed with good quick releases, and serrated locknuts on the hub axle helped maintain a good grip on the dropout too.
A quick photo showing the locknut on a Campagnolo Record hub...




Another issue with horizontal dropouts relates to fenders... having to slide the wheel forward to remove it usually means that the front of the rear fender has to be spaced further out than otherwise needed. Not a functional problem, but it does look goofy.

Steve in Peoria