Would this be done to permit a driver to create windows on the desktop from some place where it couldn't use :0 like normal? E.g. it can't use a Unix socket and

Would this be done to permit a driver to create windows on the desktop from some place where it couldn't use :0 like normal? E.g. it can't use a Unix socket and needs to use TCP? I'm very inexpert with X11, but have run remote apps on a local X11 server. But are there any scenarios locally (e.g. chroot) that could be blocking the Unix socket approach for a driver?