For instance, I have bound keyboard shortcuts to manage windows via `wmctrl`. It's absolutely crucial to my workflow, since I use an ultrawide monitor. wmctrl is mostly impossible with Wayland, and which required me to revert back to X11. Certain apps also sometimes do not work in X11 (e.g. Ubuntu's Software Center, for reasons lost to me), which then forces me to use Wayland.
I've noted a couple of other grievances, so I do not agree that Wayland is absolutely a good thing for now (at least for me).