Why cant you have HMS on your Pokemon when you Migrate them to other Games?

Question

It seems pretty pointless that Gamefreak added this.

Answer 1

People might try and sequence break by having Hms on the pokemon. If I have surf on a pokemon, then I don't need to find the surf HM in the game. It can mess with the continuity of the game even if I have the badge to use the HM. Plus some of them, like dive, are no longer HMs in the newer games.

Comments

But dive would be still a move even though you couldn't use it in the field