This does often happen (depending on the leaning of the newspaper, it's omitted if the figure is someone supported and emphasized otherwise).

A major problem, though, is headlines don't and can't carry this context. And those are the things most people read.

The best you'll get is "Joey JoeJoe says machine learning is just so awesome" or at best "Joey JoeJoe comments on ML. The 3rd word will blow you away!".

> who notably said horrible things

How do you objectively decide which statements are horrible and which aren't?

The other stuff you listed are facts, but this one would be subjective. That isn't just providing contextual information, but adding personal bias into the reporting.

"Nelson Mandela, convicted of some crimes, calls for World Peace"

Extreme examples are easy. But you can pick and choose which facts to present to the reader to affect the judgement they’re making. It would be trivially easy to paint Bill Gates as either a legendary humanitarian or a ruthless capitalist egotist to someone that’s never heard of him.