gpiozero from the 11.80.3.1 RPi Tools addon is working fine here, just checked currtent LE12 master build on my RPi3B+
# PYTHONPATH=.kodi/addons/virtual.rpi-tools/lib/ python3
Python 3.11.6 (main, Oct 26 2023, 13:22:34) [GCC 13.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import gpiozero
>>> b = gpiozero.Button(4)
>>> b.is_pressed
False
Note that 11.80.3.1 updated gpiozero to version 2.0 and dropped the RPi.GPIO backend https://github.com/LibreELEC/LibreELEC.tv/pull/8230
So you likely need to have a closer look at your scripts and exact failure messages
so long,
Hias