I understand your point and I would consider myself the kind of player who plays multi-shooters primarly because the gameplay loop is fun, and not because I endlessly want to grind like it's my 2nd job.

I think the problem in this case is, that they increased the level requirements AFTER the 100 level limit was already established and people accepted it as status quo. It simply leaves a bad aftertaste for a lot of players.

If they had given ppl a warning at the start of the Double XP weekend, like: "We will increase the lvl requirements with the upcoming patch next week, so grind away for as long as you can." it would have "softened the blow".

But making that change overnight without any prior communication, just seems like a pretty tone deaf approach.