The issue isn't just that they dont speak English, but its highlighting the trend of just buying your degree and thus taking up the position that someone who is in a position to actually learn would be in.
You don't need to pay to a university degree course to learn English. In fact there are other dedicated courses you CAN take to learn English. As per the article :
> Most students paid other people to do their coursework, she explains, and some would pay people to register their attendance at lectures for them.