Yep absolutely. It's been years since I've done that myself. But there's lots of Legacy software out there. Especially on Legacy systems that are not being developed for at all anymore. That will continue to require X11. One of the other more Niche uses which Wayland doesn't support I believe are multi graphical users on a single system. Again probably something I don't think I've messed around much with in the last decade. But it was a fun feature. Wayland is much more focused on a single session.