This is not true, I think.

The self-identification with the term "hacker" (in the good sense) is pretty strong amongst a lot of people from "those days." The co-option by the media to mean something else was an annoyance, but really hasn't changed that a whole lot.

In other words, it's a personal issue, and nothing to with popularity per-se.

It's like you and a group of childhood friends called yourself "the bucket gang" or something, to the degree that this usage pervaded your personal communications. If suddenly the media started using that term to talk about terrorists or something, you and your friends would probably be annoyed, but it probably wouldn't affect your personal usage, because the connection is already simply too strong; you wouldn't suddenly start using this personal term more often because of the media co-option.

It seems to me that those trying to take it back now aren't the same ones that identified as (good) hackers 30 or so years ago (with a few exceptions I'm sure). The 20-somethings that are fighting for it now are too young to have known the original meaning. They are drawn to the word because of the power it has in our culture. But that power is tied to the negative meaning. It seems disingenuous to argue for its original meaning when the negative meaning is all you've ever known.

Only people who have some hipster-like affinity for the term I think.

"A rose by any other name..."