You linked A: a thread of allegations against players of any Smash version, the vast majority of which involve Ultimate or SSB4 players and B: a thread about Ni

You linked A: a thread of allegations against players of any Smash version, the vast majority of which involve Ultimate or SSB4 players and B: a thread about Nintendo's interview with ZeRo, the former Ultimate #1, who was finally exiled from the community after allegations against him were substantiated by (among others) Leffen, a Melee player, who later received death threats from ZeRo's fanbase. This cannot explain Nintendo's preference for Ultimate vis-a-vis Melee in the slightest.