With the disclaimer that I haven't looked too closely into it - that does make things sound a little sketchier from a user privacy perspective. I probably would

With the disclaimer that I haven't looked too closely into it - that does make things sound a little sketchier from a user privacy perspective. I probably wouldn't use the extension myself. I'm still curious how Facebook has standing just because data is being recorded about the user's browsing which happens to include (maybe exclusively) their website. Most browser extensions are capable of exfiltrating page content - are they all in target for FB to say "nah, we don't like that" on behalf of someone who goes to facebook.com with the extension installed? I would think (hope) not.