I disagree - to me, it _is_ a huge deal. It's an overstep of a boundary that definitely should not have been crossed.

Yoast has always been borderline spammy with their upgrade nags, but at least historically they followed the WordPress guidelines and kept them inside of the Yoast pages. But flat-out injecting ads into every admin page with not much context is a step too far in my opinion.

As far as I'm concerned, automattic should revoke their wordpress.org plugin hosting until this has been addressed (as this clearly violates their hosting guidelines) and a public apology is issued.