Well, sticking with the analogy you're falling back to a taco made from different ingredients rather than just a part of the burrito. That can be intrusive if they decide to put chicken instead of ground beef in it.

More concretely, it's using a totally different tool to get a subset of functionality you want vs other solutions.

Personally I don't see a reason why one would do that, but more power to you if you do. If anything, ordering the taco sometimes is going to give you a more refined palette than if you got the same burrito each time (i.e. more experience in the problem space you're working in).

(I'm getting hungry now...)

.... if the tui app includes the functionality.