First of all, thanks for the link to that site, I didn't know about it and look forward to seeing more from Ella.
I think some of her points are interesting but I don't know if I agree entirely. I don't agree that the derivation of the sign DEAF justifies the use of the term "deaf-mute." However, her points about "deaf-mute" being reclaimed the way other historically oppressed populations have reclaimed negative labels, and also about the use of the term as a specific identifier to distinguish from CODAs, HOH, etc., are well taken.
The problem comes with the part she mentions at the very end. She says the term is not for those ignorant about deafness to use. The problem is, the general public isn't anywhere nearly as aware of Deaf culture as they are of gay culture, black culture, etc. I think it's more or less generally known by now that gay people call themselves "queer" but it's still an insult when straight people do it. However, like I mentioned in the thread about Rinko Kikuchi, the term "deaf-mute" is not recognized by the general hearing public as an insult.
To my way of thinking, there needs to be more awareness of the negative connotations of this term BEFORE Deaf culture can reclaim it. Otherwise, Deaf people who call themselves "deaf-mute" are simply reinforcing the notion that it's a perfectly fine thing to call someone.
And that's my two hearing cents' worth.