I don't think teams adjusted to his Barca.
Xavi knew very well that the style he used in 2022-23 to win the league in a clear fashion was not tolerable and sustainable at Barcelona. It's not something we can use in a season by season approach. It was a once and done thing. Do it to win after some really bad years, and then use the confidence to build what you actually are demanded to build at Barcelona.
And he tried this. As time passed we became offensively better, but problems started to appear in defense. We started to notice more and more, that the defense we had in 2022-23 was not based on individual quality at all, but tied to his super cautious tactics. A bit like Arteta. We all remember those 1-0 and 2-1 wins, sitting behind leads and closing shop.
His big mistake was that he didn't cope well emotionally with the disappointment going from 2022-23 to a worse 2023-24. The club was willing to stick with him despite that poor league season, because we saw a step forward in CL, making a quarterfinal after several years of being basically an EL team in terms of quality.
And the PSG tie was promising, gave us some improvement for the next season. Beating them away, leading them 1-0 at home, with Lewandowski missing a big chance to make it 2-0. Then Araujo moment happened, and PSG had the skill to exploit it.
He failed to be emotionally stable in 2023-24. Had he been calmer, he would've been fine. Madrid declined soon after, their squad became less and less cohesive, and never managed to produce another league season with a 90+ points total like in 2023-24. And Yamal exploded for us. We had some things going, we weren't exactly hopeless as he believed.
But then we got Flick, so the club didn't really miss out. He was the only one who missed out. He's still bitter and mad about it judging by his interviews, but he was the one to blame.