No need to become all nostalgic
What vids like these fail to tell is that Barca drew 6 games and lost 5 in the treble winning season. And unlike the current squad, that team actually was hungry, balanced and still had a trophy room to fill and a point to prove. And while we're at it, the treble winning team didn't tiki taka; they were a lot more direct than many people seem to remember.
Don't get me wrong, it was no fluke to win that treble; but a Real Madrid that sucked ass that season and a bit of luck in the CL surely helped.
It took Pep years of work, numerous changes in formation and tactics, experiments with transfers, slaughtering the odd holy cow / getting rid of deadwood and integrating fresh players into the squad to finally come to
his ultimate Barca, that of the 10/11 season. His success justified everything he did in the end; but would the board have backed him if the team didn't win anything in between; in other words, would they have given him time to make overdue changes ? I think we know the answer. But the changes themselves would have been correct, no matter the decision.
At this point, as others have pointed out, many things are in disorder and Barca is in transition; hence the coach, whoever it is, will need time. A lot of it.
The board needs to decide whether they actually have balls and support the coach, give him a reasonable budget and a free hand to regroup the roster in the summer. Or they could cop out and haul the next coach in which, I can guarentee you, will lead to even worse results.