What if it is like this, but for different people? A single case of Dyslexia isn't necessarily representative.

I honestly think that dyslexia is a range of undiagnosed conditions. It's nothing like the simulation for me, but it's not the first time I've heard of letters jumping around.

Dyslexia simply means having trouble learning to read. Being diagnosed with dyslexia does not give any indication as to the cause of the dyslexia. The formal definition in the DSM-5 is:

"a pattern of learning difficulties characterized by problems with accurate or fluent word recognition, poor decoding, and poor spelling abilities."

The experience isn't the same, but I think the affect on someone without it would be similar.

In essence, it would take them a lot longer (or at a higher cognitive tax) to intemperate a page of text.

What is it like for you ?

It's for sure different for different people.