Considering the consequences that win had on the club for the next 7 years (and still counting), looking back now I'm pretty sure many of us would've rather us take the L on all fronts that season and that first vote of no confidence succeeding, instead of winning the treble and Bartomeu getting another term to destroy the club on all fronts. Sure the CL win was great in that moment, but for me, 2009 and especially 2011 will always be the superior CL wins, also because of the way we played, 2015 win was all about MSN and individual quality prevailing, and we weren't as nearly as dominant under Lucho as we were under Pep, I'd even go as far as saying we were more of a counter attacking team in 2015.
I'd also say seeing Messi win the World Cup has been the happiest moment as a football fan for me since that 2011 Wembley final. And after all the shit show Barca has been in since 2017 (and also having to see Madrid prosper in the CL at the same time) this WC win for Messi was what many of us needed, to put things right at least in that regard, the rest of the world and other (neutral) fan bases finally recognizing Messi's greatness as the GOAT.