Too exaggerated. But i agree with you that team needs some physique on midfield.
When we had Xavi-Iniesta, they were so good that you could field them against ANY opponent.
Home: vs strong teams
Home: vs weak teams
Away: vs strong teams
Away: vs weak teams
So, people got used to that idea of having a gala 11 and they were playing in all circumstances.
During Rijkaard, for example, he rotated players based on the opponents.
At home, he used to play Xavi-Deco+pivot, since we needed more possession and we had to risk more.
On away matches, more often something like one out of Xavi-Deco, paired with Van Bommel/Motta+Edmilson and similar.
Or in a CL, against English teams who were physical and used a lot of crosses, he usually used: Edmilson-Van Bommel/Motta-Deco combo. (He was going for physique, height and more dirty players).
On the other hand, when he played against less physical teams like Milan and Porto, he used Deco-Iniesta+pivot combination.
He had his own formula against a certain type of opponents. For example, he never started Iniesta (iirc) against English teams in 2006. Yet, he always used him against other teams.
In that sense, since we don't have perfect players, it would be wiser to have 4-5-6 midfielders with different skills and approach every game differently.
If we play at Camp Nou against an 18th placed team, then we need someone like Puig paired with another more attacking midfielder like Pjanic, Vidal or even Raki.
Frenkie-Arthur is quite useless combination against weaker teams. You just get possession and not too much forward passes.
On the other hand, if you play against Atletico, they you won't field Puig-Pjanic-Busi but something like Busi-Frenkie-Raki/Vidal/Pjanic.
But again, majority of fans here started to watch Barca during Pep, and Pep's Barca was really a weird era, yet people think that majority of things from that era "are normal" and how we always played.
1. La Masia worked only then
2. that was the only time when we didn't need to buy too many players since we had 5-6 La Masia gems, so we weren't as bad on transfers like in other eras
3. we had Busi-Xavi-Iniesta, so there wasn't a need for midfield rotations at all
4. since our midfield was perfect (and short), we adopted a style which fitted to those 3 players etc
My point: a lot of things back then were: a huge luck (golden La Masia generation, Messi, Xavi, Iniesta, Busi) so we adjusted to it and we were able to act differently than today and differently than other top clubs.