Dysgraphia, and (the often accompanying) ADD, are part of why I initially got into computers. I would type much much more easily than I could write, so I would beg teachers to let me type assignments instead of writing by hand, which was significantly less common when I was young than it is today. In retrospect, it's a good part of how I ended up working in technology.
Unfortunately it has, I think, also hampered my career. It makes it, as you can imagine, significantly more difficult to whiteboard. My whiteboarding either looks like something a child would produce, or requires immense focus (often both), completely separate from the engineering consideration, to produce what seems simple for most people.
Inconspicuous disabilities are such a strange thing to live with. They're not evident, so I think it's difficult for people to relate to them. I really appreciate the effort that was put into making the linked site and I hope it makes it easier for people to understand the struggles some people deal with without most other people ever noticing.