Yep, has been working stable for me, Catalina, Big Sur, makes no difference, all the files are in the zip file.
I'm testing removing a couple ACPI files, just keeping
SSDT-EC.aml
SSDT-HPET.aml
SSDT-PLUG.aml
and obviously removing the references to these two in config.plist:
SSDT-UIAC.aml...