This isn't true. The reason it failed is because UEFA threatened to kick all teams involved out of the champions league with immediate effect. Chelsea were in the semis at that point and almost immediately pulled out of the Super League. Everyone lauded them as being morally upstanding but it was obvious as **** to me (and noone else apparently) why they'd done it. Man City who were also still in the Champions League were the next to pull out, and then the whole house of cards collapsed.
I 100% guarantee you that if Chelsea / City weren't still in the Champs League at that point, they would not have pulled out and the Super League may even have gone ahead at the end of that season.
Na City for all their dodgy dealings are really engaged with their fans.
They withdrew due to a fan backlash. I’ve got a pal who works with City with his business and their work with the fans and community is world leading.