Only Barcelona have a perfect points so far (9 points from 3 matches), no one would be wrong to expect them to become La Liga champions this season, but that's too soon to say, we haven't even go to the first El Clasico of the season yet, so even though Barcelona are currently having a good run, we can't know how they will be after that.
About Barcelona's match against Rayo Vallecano, I thought Olmo played well, it's a shame he didn't play from the start, maybe if he played earlier we could have seen Barcelona's third and fourth goals.
It is still too early because the league has not been half way through, what Barcelona is doing now is taking advantage of the situation of players who are on fire and that cannot guarantee that they can survive until the end of the season if a storm of injuries hits this club plus the dire finances then there will be a moment when Laporta frowns. Now let's see how far Barcelona can go amidst the uncertain club situation. Because no matter how ideal the player's performance is, it will be affected by the club's worrying situation. Olmo is not on the list yet and Laporta is trying to sell his players to patch up other players. Digging a hole to cover a hole, Barcelona is on its way to the abyss.