How disabling is mild dyslexia?

I have mild dyscalculia, but ive always been fine with words. Reading was always my strongest asset in school. I suck at math though.

I was wondering how big a detriment mild dyslexia is. I know a "NEET of 8 years" who basically won't try at anything because of this. I kind of feel like its an excuse to be lazy, but I can't say for sure.