Your point seemed to be that some worry is warranted becomes teams come back all the time down 2-0 in 7 games series. You seem to not be saying that now, but I have no idea how to parse your previous post to come to any other conclusion.
And yes, when looking at 30 teams over the course of 162 games, many will lose 3 games in a row. This is the wrong way to look at it, however. I gave you the odds of two teams with even winning odds/per game, losing or winning 3 games in a row. 12.5% ain't never.
As I said before, worry about what you want, but the odds are the odds.