Gengar levitate was already supposed to have been removed with Unova introduction, but was decided to only be later on, and frankly cursed body is a lot stronger as it brings another rng layer to a match.
Pokemmo movepools and competitive sets (abilities etc) get updated towards the latest update possible, without implementing things that don't belong in this generation (moves, abilities and items, with a few tweaks and/or complex bans)
Wow introducing a difficult boss in a mmo, what a scandal right? Imagine if my 6 pachirisus can't beat ho-oh smh.
And shedinja being nerfed for pve is honestly good, once again, to help and force you to create more original strategies (doens't happen, but the idea is there)
And I do think you're alone, sorry.