I see a lot of tinfoil theories in the comments but no one mentioning "url unfurl" capabilities. You send a link, it's encrypted end-to-end, it arrives to the o

I see a lot of tinfoil theories in the comments but no one mentioning "url unfurl" capabilities. You send a link, it's encrypted end-to-end, it arrives to the other side, and the link is unfurled for display. Bam, Facebook knows you sent that link.