I'm not sure exceedingly difficult alternate solutions are really a legitimate substitute for a full control option but I'll concede. The game is only almost impossible to 100% without motion rather than literally impossible.
Hmm? Why do you assume the alternate solutions are difficult at all? I mean, I don't have the game myself, so I'm not in a position to speak I suppose, but one of the alternate solutions for the Bullet Bill one (in the tweet I posted) is just throwing Cappy straight ahead of Mario, right in the Bullet Bill's path, and just holding the button to keep him there until he grabs the Bullet Bill automatically. That doesn't seem difficult, as long as you know the Bullet Bill's path. But like I said, I don't have the game, so I suppose I'm not really in a position to say, but looking at those "tricks" they don't seem too much worse than anything else in the game, but that's just based on appearance.
Either way, I definitely get what you're saying though. But then again, at the same time, it seems like kind of an odd thing to complain about too much when you consider that one of the other common complaints about Odyssey are that too many of the Moons are way too easy to get in the first place. If that's indeed the case, and stuff like this adds some spice and some actual challenge in the game, and makes it so that you can't just do everything the easy way, that would be a good thing either way right? To actually have some challenge, even if it ain't intentional challenge and is just "artificial challenge? Still challenge and keeps things interesting, keeps you thinking and on your toes, and is exactly the type of thing that forces you to actually think about all of the tools the game gives you and how and when to use them and all the ways you can combine them and stuff. Which is exactly what a 3D platformer of all things is really about to begin with, right--pushing all the tools they give you to the limit? That seems like a good thing to me. But that's me; all a matter of perspective and how you look and think about these type of things I guess. xD