Audism example or not?

Got this bit from Ridor's site. Thanks to Burke too!!
Those of you who are signing or deaf impaired pls avoid thinking this is acceptable;

The fingerspelling barely legible and since most hearies (% wise think) they know how to fingerspell the ABCs. For those of you who do not want the eye strain, it reads " I am not a dummy."

Great, now I have to wonder whether or not

A- it was done on purpose because the artist thought people would know the joke?
B- Hidden from plain view on purpose to speak to an elite group that could appreciate what it read?

or many possible other reasons. But the good news is now we can see an example of bad propoganda from 140 years ago and it still rears its ugly head presently. The signing/deaf/pathologically impaired crowd are obsessed with our ability to meet their communication needs. The signing/deaf/pathologically impaired individuals would have either killed us off in the past or "tried to fixs us." Obviously if nature thought we needed to be exterminated, we would have been extinct long ago. Survival of the fittest, eh? Humans we are way more adaptable then we realize. We don't know this because lets face it. Its easier to fit in, blend, be part of a crowd, then it is to go against the mainstream views and deal with the ramifications of it.

When I was very little. I don't remeber who, what or where or even why but my Mother took me to some kind of family social event with friends and one of the little girls there had a badly burned arm. I remeber being afraid of her touching me. I knew something was "wrong" about her arm and for a long time afterwards I used to wonder what it would feel like to have her problem instead of "mine." Then I realized, it feels exactly the same way in the sense that it is YOU. Inside, your voice cannot really see what everyone else sees. Only the reaction you get from them is what you can see of their response or interraction with you. Maybe I am not explaining this well? Another example would be if youre a kid and someone has surgery and you see a scar on their knee. You wonder how it feels to be that someone with that scar. Then eventually perhaps due to a fall, fist fight, whatever you too get a scar and then you realize, it still feels like you. Only now you with a scar and know better that scars are superficial. I cannot promise this makes sense. The English Language has its limitations... what can I do do?