According to Connor McGregor, Mr. Mayweather "can't even read" so your fear is definitely valid.
http://www.telegraph.co.uk/boxing/2017/07/13/cant-even-read-...
http://www.telegraph.co.uk/boxing/2017/07/13/cant-even-read-...
That started a while back from Mayweathers feud with 50Cent in response to a radio program where Mayweather struggled to read the promos aloud.
[0] http://www.businessinsider.com/50-cent-tweeting-about-hnhi-2... [1] http://nypost.com/2015/09/05/heres-how-50-cent-went-broke/ [2] http://www.rollingstone.com/music/news/50-cent-to-end-bankru...