Well, isn't that just burying the lede? I applaud the application of technology, but sometimes I think the neophyte approach, combined with the amplification of the web, can be more detrimental than helpful as intended.

Sorry to be uncharitable, but here is how you could've written a more honest introduction:

I heard a friend with dyslexia say that letters just jump around for her. Without asking for details, this reminded me that I had a hammer called JavaScript, and this looked like a nail to pound. So I wrote some quick code with made-up parameters and copied info from Wikipedia for cachet. I didn't bother to get any further feedback from dyslexics about this, so it is purely my folk-interpretation of a condition I don't really know about. I then uploaded it to HN to get some feedback, but I still didn't bother explaining what I did or why.