I’m not taking sides on that issue; however, I will note that Roon on Android phones is quite a different animal from Roon on a 10-inch Android tablet. The former lacks many features; the latter comes quite close to replicating the desktop experience . . . when it works properly.
So it feels like the comparison is apples to oranges.
I will add, I would be triply irritated if I bought a new tablet to get Roon to run better, and it was the same. I am already disgusted by the planned obsolescence of modern devices. But to buy one that didn’t make a difference would really set me off (as well as cost hundreds of dollars that could better be spent on many other things – whether charitable or hedonistic).