Random take, but I actually think Mango is really depressed
You can tell whenever he rants about Melee these days, it's some combination of bitterness and defeatist
I think being the GOAT may have been THE core thing to his self image
I had a 10 year streak of not vomiting because I was mortified of it, then I finally had to vomit and I felt so amazing afterwards I actually cried that no one ever told me it felt good afterwards