Well, you have to say what you think your strongest team is because the striking fact is that Pep has rotated his squad regularly as a result of form, injury, illness and to balance minutes. I assume that by "strongest team" you mean the eleven who started the QF and SF, in which case Rodri started 3 of them, whereas most people wanted to go with Ferna. Ferna came on after 64 minutes and the same substitutes were used in the final as in the earlier knock out rounds. Apart from that Cancelo started 2 of the knock out rounds in Zinchenko's place but Zinchenko's selection does not seem controversial. So the element of rotation does seem to have been minimal, and the factis that the "strongest team" had ONLY started the QF and SF so we cannot take it for granted that it would start again a monthe later, though the evidence is that Pep was loyal to those players. The theory is that he blundered by not playing Ferna, who would have prevented the Chelsea goal. This might have been the case ... but equally it might not. I would point out that Ferna was unable to prevent a golden chance falling to Pulisic to put the game beyond our reach. And for the goal itself it is hard to say that only Ferna was needed to prevent it: no-one was within a mile of Mount, our CBs had gone AWOL and Zinchenko waved Havertz goodbye as he chased a ball played into the space behind our backline. The goal was a team disaster, not down to the absence of one man.