And nothing of value was lost

Thought this was referring to the Marvel character, Medusa, one of the Inhumans.

Could not figure out how prehensile hair and rock skin made a good match.

According to the article, the only things being removed are digital copies that were given free with a DVD or Blu-Ray purchase.

Not amazing (I would argue that Funimation should make all eligible digital copies downloadable before the service ends), but assuming customers have their original physical media, the loss is minor.

I wonder if the people who make comments like these would feel quite so smug if their likeness was put online for anyone to use to promote hateful or disrespectful content.

I think you underestimate the sheer fuckery of corporate advertisers.