It is very relevant. First of all because it hits Paul Scholes as a supporter. The club he loves has lost a player with great potential because he wasn't given space in our team. Paul Scholes may wonder if Pogba would have still left if he remained in retirement + he would be furious with the boy for not fighting for his first team place (these are people who think that Manchester United is the centre of the universe and that anything beyond not succeeding there is a failure).
It also hits him as a SAF's loyal disciple. Believe it or not, PS is SAF's most loyal disciple. Unlike Giggs and Gaz Paul Scholes didn't had any agents. When Moratti enquired about the guy, he ended up speaking with SAF who told him to stick his offer in an inappropriate place. Paul Pogba is the living embodiment of SAF's rare but biggest feckup. We're actually buying our talent back for 100m because the manager (Paul Scholes idol) preferred to stick to his golden oldies (which also include PS) than to this kid. For us, its not really that bad to admit that SAF messed up. He's the single most important person in this club's history but he's still human after all. However these people owe everything to the man, he made them the stars they are now and lead them to multiple victories. Basically they owe him everything and they can't stomach that he might have messed up big time.
Finally it challenges the very concept of the United way. The class of 92 have this romantic view of that period and think that United were lead by some knight in shining armour who would rather lose trophies then not giving youths a chance. Its unthinkable for them that SAF would rather lose a top quality but inexperienced talent and rely on his old guard just to end his career on high. This mentality is ironically highlighted by the Keano-SAF spat which is brilliantly described in one of SAF's books. At one point, Keane looked at SAF and told him that he had changed and he wasn't the man Keano idolised anymore. SAF admitted that he had to change else he wouldn't keep on winning. That is something I believe that the class of 92 have yet to fully comprehend. The SAF who gave them their shot wasn't the same SAF's of Pogba's time.