

I don’t think the “some apps don’t work with Wayland” argument is particularly valid any more. The vast majority do, and most of those that don’t are outdated anyway. Gnome ships with it by default and KDE is really close to that point as well.
There really shouldn’t need to be any debate whether to implement it or not at this point- clinging on to X11 is just delaying the inevitable.
There is vast ocean of difference between collecting non-personalized, aggregate data internally to inform UI design decisions or improve system performance on the one hand and secretly logging personal information in order to pass on or sell to third parties on the other.