Good project but I wish something like this can exist for proton mail, I have made some puppeteer scripts which can hook up to proton docs.
But Proton is really doing some great disservice to not having a public api for their docs.
I can imagine it being used for anonymous comments page for webpages etc.
I am not sure if there is something that you can do about it though given that the fundamental issue of this is caused by proton not having an api whereas I think google docs does have API.
It's more a message to proton if anything.