This is possible with any extension that can scrape site data or every camera ever made. Also the source of the extension can prove such exfiltraion is not its purpose.
This extension is explicit about scraping and storing data from Facebook, which obviously makes it rather more of a target.
And I'm not sure what the point of bringing up a camera is - obviously Facebook can't stop people doing that, but I can't see why that entails that they should simply do nothing about any scraping of data.
