Hey! Thanks so much for this module.
This is probably the kind of issue worth closing immediately and just keeping around for posterity (feel free to go ahead), but I noticed that because I degoogled with the De-Bloater Magisk module, it doesn't work for me to let aa4mg write the stubs to their original locations under /system.
Instead, I can just download this repo, and install the corresponding APKs the regular way (to /data/#wherever).
I kind of wonder if it might be worth changing the paths aa4mg installs the stubs to? Either way, it's only a very minor inconvenience.