I heard they're on the JP rotation too. In fairness JP don't have triggers for them, but as a counterpoint to that those triggers require Weapons Badges and the launch of NGS dramatically reduced the supply of those on Global to a paltry 25 per week from Divide Quests (I think JP can get more from their mobile tie-ins).
There is still a lot of scope for parity improvement in classic PSO2. Global ideally needs a replacement for the mobile resources and I don't know how many times it's been said that it needs a replica of the wonderful Weapons Badge 2021 exchanges. It sounds like getting the rest of the JP UQ rotation (if it does include Episode 4) would be a part of that.