They could add auto lock or some form of aim assist. I think they simply did the bare minimum to get the collection out there and making it a limited time release guarantees that it'll sell well.
That person was responding to me, someone who hasn't played the game, and, frankly, they and others making the same point are the ones that are right in this thread, both here and in their follow up posts. Someone mentioned the game's Grandmaster Galaxy stages and, without having played the game myself, I found this as at least one example of the difficulty porting this game would entail:
Auto lock isn't a solution here and using the joy cons to replicate the Wii's pointer is out the window, since they can't release this as a part of this collection but at the same time tell Switch Lite owners that they can't play this particular game out of the four unless they own joy cons. To me, it looks like a game clearly stuck on its original system.
Matthewmatosis has a review of the game that touches on the extensive use of the Wiimote that's also quite illustrative of the problem here: