It’s just reflecting the reality — that success in a short playoff series is largely a matter of chance, rather than differences in quality.
A long season (at least with a fair schedule) can sort the wheat from the chaff, because over time, chance outcomes even out. But in a few games (three, or five, or seven), that often does not happen.
MLB has broken the teams into six divisions - six small divisions, and mangled the seasonal schedule to the point that clubs do not necessarily face similar strength of opponents. They’ve then included one-third of all clubs in the post-season, which largely negates whatever quality sorting the regular season (mangled as it is) might have achieved.
It’s a great spectacle. Lots of post-season games, lots of TV money, lots of tickets sold. But the results are largely a crapshoot; clubs that have demonstrated fairly conclusively that they are better than the competition — in a long season — can be, and are, summarily ousted. Because we want to believe the post-season rewards the better teams, we choose to believe that these clubs have lost because their opponents somehow “rose to the occasion.” But a lot of it is just pure chance - dumb luck.
We don’t want to believe that, of course. And we’ll certainly celebrate and savor it if the Phils are the beneficiaries. But do the Phillies have a stronger roster or organization than the Dodgers? Do we really believe that?
I know I’m in the minority here — but for me, appreciating this reality helps me keep a (somewhat) even keel about it all. If we defeat the Padres, I’ll enjoy that, but I won’t take it to mean that our club is really better (or worse) than theirs. If we don’t win, I won’t see that as a condemnation of our organization relative to theirs, either — because pretty much anything can happen in a short series. So, not over the moon if we win, not suicidal if we lose. We’re rolling the dice.