Короче, что люди пишут:
Caveat 2019: On modern desktop Linux systems using systemd, udev rules do not mount filesystems in the regular user namespace, i.e. you cannot mount a filesystem using the mount command in a udev rule. Furthermore, in these systems, the fuse (user filesystems) system is configured to handle USB mounts via a desktop icon, so mounting by hand using an fstab rule to some degree conflicts with the fuse system. For mounting USB filesystems by UUID automatically on a headless server you would be best to remove the systemd fuse configuration and use udev rules to trigger one-shot mount services.
Поэтому нужно так: LABEL='mylabel' /home/user/path vfat noauto,nofail,x-systemd.automount,x-systemd.idle-timeout=2,x-systemd.device-timeout=2
потом systemctl daemon-reload && systemctl restart local-fs.target
Но тут нужно правила создавать для подключения и отключения в systemd. Короче, хотел потянуть за хвостик, а вытянул слона)))