User blog comment:VillainNut/PE Proposal: King Sombra from My Little Pony: Friendship is Magic/@comment-2059440-20200217221148/@comment-27022982-20200217225703

Have the creators confirmed that Nightmare Moon would've ended all life in Equestria had she succeeded in her ultimate plan, with the everlasting night killing all of the plant life? If that's the case, then my vote would be no as Sombra would fail the heinous standards compared to her, as he was only trying to take over the Crystal Empire and later Equestria.

Sadly, the proposer didn't actually explain the heinous standards for Friendship is Magic and was more focused in explaining Sombra's worst crimes. It's as if someone's desperate to want someone to count in said series, which really doesn't help the situation any better.