Surely someone intelligent, whether dyslexic or not, will understand the negative implications of such poor English and for self interest take appropriate steps, whether asking for help or/and spell checking, to maximise achieving the highest price?
How many people have seen the advert and as a consequence of the written English not taken it seriously?
For me allowing such poor English to be used in an internet advert says more about the individual than being poor at English, irrespective of how great an engineer he may be.
BB