Have you looked into it? I believe writing a wlroots compositor to be in the general ballpark of as difficult as writing an Xorg window manager—which is, beyond the type of project I’m likely to take up in my spare time, but at least doable by mere mortals.
Far more work. I wrote the X wm I'm currently using in a couple of weeks and it's a few hundred lines of code. You can get a working X WM in a few dozen lines or tens of thousands. Mine is ca. 700 at this point (floating+tiling).
I considered wlroots but the complexity is far higher and Im not in a rush to move to Wayland.