There's absolutely no point even trying to engage with someone who writes something as fucking stupid as that.
Anyone who thinks signing Messi is a short term move is being wilfully ignorant at this point, there's only so many times the long term financial benefits of having the greatest football player in history shine a colossal spotlight on your club for 2 or 3 years can be explained.
Also, I think it's absolutely pathetic to claim Pep Guardiola "won't care what damage is done to the Club once gone". Guardiola has come to this club, brought the fans 8 trophies, domestic success that could only be dreamed of, he's gone to bat for the club dozens of times in front of a press pack looking to bring the club down, challenged UEFA, the G-14, the hateful 8.
What the fuck has he ever done for some random on a forum to question how much he cares about the club?