I checked out Github for more info as suggested, and it seems the main ingredient, https://github.com/capeprivacy/private-ai is forked from udacity/private-ai. Hmmm. I was expecting to find a clever and useful repo to nicely identify and strips out personal info, that's not what it is.

I do think stripping and adding personal info back only when needed is in principle a good idea for some situations. But I have big doubts at the injection of another party into the mix.