>blastoise can't learn toxic anymore, yet a transferred one from past gens is perfectly legal

This was just Gamefreak's way of milking old generations as much as they can and profit off people who would buy digital versions of the GB games just for those Pokemon with said transferable moves and then pay for Bank and Home in order to get them into their current gen, wasn't it? Cutting moves is part of their money making strategy too? The absolute mad men.