I'm not sure lulling the rest of the league into a false sense of security is a thing.
For three years we've been complaining that Marsch's direct play is too easily beaten by a well-prepared team sitting deep. I've tried to read up on how you actually adjust to that, and the one and only common answer I've seen is that you need to use possession in the attacking third to pull the other team out and create a little bit of space.
If we're asking to go back to Marsch's style now, it means that we either don't trust Armas to execute the new game plan or we've been complaining about the wrong thing this whole time.
The complaints with Marsch was that if the press was failing to generate offense, he had no other answers. I don't think there were many people wanting to abandon the high press, just have some additional ideas against bunkering teams. Under Armas, we seem to focusing more on possession, even when we don't need to.
We should be a high press, high "energy" team that comes out flying from the first whistle. And, then go to the possession style of play that Armas has introduced, if the opponent is bunkering.