As a 'classic' dyslexic, like the guests with this condition who have posted earlier, I don't find the jokes offensive per se - just unfunny as they simply don't describe the experience of dyslexia although they may be amusing in poking gentle fun at spoonerism or some kind of 'medical mondegreen' condition.

I learned to read quickly at an early age as I recognized the 'shape' of words in a specific context - for example pool and pond could be totally interchangable and am still a very fast and avid reader
But, I would (and still do) struggle with anagrams or even a simple word spelt in reverse which don't make any kind of 'sense' to me.

I experienced more difficulties in my professional training at university but, in my early career, all staff were required to use audio typists anyways and subsequently I rely on a good spell check programme - with some quite hilarious/embarassing typos from time to time :)

However rwo of the jokes made me laugh

Dyslexics of the world untie! - after I'd reread it :)

and
from JenEllen

How many dyslexics does it take to tell you that a joke is NOT about dyslexia?

'Em'