Who is getting the ping data?

The excellent journalists at 404 Media uncovered information about Automattic selling data to “AI” companies from WordPress.com and Tumblr. A number of people have jumped in to say that “WordPress.com != WordPress” which is a fair point, but this is where I touch the onion on my belt and point out that even WordPress sends pings to Ping-o-Matic by default and does anyone know who gets a real-time feed of that data?