When you have a set amount of moves or pokemon to use, and you have to waste one just to access a certain area or something, then yes it makes it a bit harder. A wasted move slot is always heavy, doesn't matter the situation. You can bring your Blaziken to sweep a place, but what if you can't do that? What if you mispredict and you fail do to so?
At any rate, keep in mind this is just my opinion on it. I also think it's annoying too. But the thing is: This is already an idea from another game. Unless Ame (Or someone) can come with an original idea for it, i doubt it's going to be considerated.
But hey, i'm not Amethyst, so i can't just give a "real answer" on that... We can wait and see Ame's opinion on this. Because iirc, this wasn't suggested before. If it was, i missed it. That doesn't matter though, we shall wait to see Ame's take on this.