Why does WM8960-Audio-HAT Installer hard code location of config files?

[owingst]

In the dtoverlays section of the installer script, location of config files is assumed to be for bookworm. These steps will fail on raspi bullseye, etc. Is there an installer for Bullseye? Please let me know. Thanks!

#set dtoverlays
sed -i -e 's:#dtparam=i2c_arm=on:dtparam=i2c_arm=on:g' /boot/firmware/config.txt || true
grep -q "dtoverlay=i2s-mmap" /boot/firmware/config.txt ||
echo "dtoverlay=i2s-mmap" >> /boot/firmware/config.txt

grep -q "dtparam=i2s=on" /boot/firmware/config.txt ||
echo "dtparam=i2s=on" >> /boot/firmware/config.txt

grep -q "dtoverlay=wm8960-soundcard" /boot/firmware/config.txt ||
echo "dtoverlay=wm8960-soundcard" >> /boot/firmware/config.txt