The Settings Addon can only hold a limited amount of different settings. We simply cannot put every single setting for all supported hardware.A specific, and separate addon for e.g. Raspberry Pi would be an option. PR's for such addons are welcome.
I know that hdmi_rotate works on my 2nd monitor, but I never had to use lcd_rotate. You sure you have "lcd_rotate=2" in the config.txt, instead of "lcd-rotate=2" ?
LibreELEC works with 2 seperate partitions, the system and the (data) storage partition. What do you need the /boot folder for? Your config.txt file is sitting in the /flash folder, which you need to change to "rw" if you make any edits/changes.
Yes I do have LCD-rotate=2 it was a typo, ok i had a poke around couldn't find the config.txt in ssh so i popped the sd card into my pc and changed the config.txt that ws in the root of the sd card. ill head back into ssh and try in /flash. thanks for the hint