Sealing moves is a very powerful and detrimental effect, right now stuff like cursed body can seal multiple moves and leave you completely defenseless if you get unlucky, and kinda guaranteeing a defeat sooner or later.
People never really minded thier existence due to gems blocking sealing, but when that’s not available its a undeniable problem that forces the use of safe guard.
I do not believe such a extremely game changing ability is healthy for the game and really limits the creativity of both the player (having to bring something to counter it) and staff (having to double check and re think pokemon that posses it to avoid creating unfair scenarios)
Move sealing should get a nerf of some kind, perhaps being limited to only sealing one move?
That would also make it consistent with the original game!