A way I can see this being good for (or at least considerate of) people who play with transfer moves on cart is in the case of changing move functionality, and by move functionality I mean "does this move literally function at all in this game" since moves that were "cut" still exist in the game, it's just that you can't use them and their description recommends that you replace it with something else.
The thing is, move functionality isn't set in stone. We've already seen this happen this gen with Flash. It can't be used in Sword and Shield, but it can be used in BDSP.
Imagine, for a second, that Wish gets "cut" from Scarlet and Violet. Now imagine you've got a legit Wish Chansey. You transfer your Chansey into Scarlet and Violet, and forget Wish because it's literally useless. Gen 12 comes along (yup, three generations later), and whoops, looks like Wish is usable again. Fuck you for wanting to use your Pokemon at any point in the nine years between Gens 9 and 12.
The thing is, move functionality isn't set in stone. We've already seen this happen this gen with Flash. It can't be used in Sword and Shield, but it can be used in BDSP.
Imagine, for a second, that Wish gets "cut" from Scarlet and Violet. Now imagine you've got a legit Wish Chansey. You transfer your Chansey into Scarlet and Violet, and forget Wish because it's literally useless. Gen 12 comes along (yup, three generations later), and whoops, looks like Wish is usable again. Fuck you for wanting to use your Pokemon at any point in the nine years between Gens 9 and 12.