Is this insulting?

I just noticed the 'icon' that blogger uses for the accessibility feature for the word verification:

I'm sorry, but why would someone in a wheelchair need to use this feature? Surely this is more for partially sighted people?
On top of this, when I click it, Firefox claims it needs the Quicktime plugin, which I think breaks the idea anyway.
A case of the blind leading the blind? [Sorry, couldn't resist it]