Not sure if someone responded but that is correct. For the ROG Ally, it does not support touch support. So the best way currently is just using the BIOS.
yes, however you might have to make a dracut conf file to include the file into initramfs and you will have to enable initramfs regeneration which will slow down updates by a lot
Before doing this, if you just plan to add options to a module, you should consider using a karg instead! Touching the initramfs system and modprobe will slow down your updates so all your updates will take several minutes longer. In most cases what you want to do in modprobe can be done with simple kernel arguments, In this example lets change...