Many different people, many different opinions.
And yes, the reason why I love playing wireless, and ONLY wireless, is the freedom. And this is also my point here: The more buttons you have to push in order to do a simple task(at a job), the more it interrupts your performance. I've been playing with tons of pedals since 1975, and the last 10 with iPads to accompany me on stage. Tweaking while playing is not always the best solution, but the point is that when you DO have to...or in-between songs, its just SO much easier when your boxes are right there.
I agree that hardware controllers are more intuitive(I also work as a producer, professional for 20 years now, so I know the differens), but making a piece of hardware that could cover all the options in Helix.... not an option. The big advantage with Ipad (pro), though it is two-dimensional, is the ability to mimic pedals and knobs....hundrets of them. And made the intelligent way, a chorus level could be just a finger on button, sliding down a bit.
My point is that in the lack of useable solutions, the iPad is like sendt from heaven. And NOT wireless. To many things can go wrong in a live situation with a dusin of wireless hardware around.