i think the difference is, your advice is good for a real world scenario where maybe i've bet money on the team, or have something to lose other than a little pride/ego
Sports outcomes dont really matter, so why not have a little fun, count my chickens before they hatch, and make some predictions!
But since you've brought up a discussion point at least, I think that very few playoff series could be considered easy, but I'd be surprised (not necessarily 'SHOCKED AND APPALLED') if we didn't make the ECF.
If I make sports predictions, I'm expecting to be wrong at some point, I just don't know when. But I don't see the point in being conservative to the degree where I just say 'I dont know anything until the game is over, and if i guess i could be wrong, so i wont.'