This doesn't surprise me.
People who are skilled in English can put others down, who have low self esteem about it from school, from teachers eho faildd them and victim blamed, they wouldn't post somewhere like here and take all the insults.
Not everyone finds things easy.
This is how hard it was for me to learn to read and write.
I wasn't taught anything at home my Mum was mean with everything so wouldn't teach me anything or give me anything to help me, shs had excellent literacy skills and spelling, she wouldn't listen to radio 4 she hadn't a clue what they were talking about and my Dad totally illiterate yet he is the type to listen to radio 4 and grasp what they were talking about.
I was dx as dyslexic at 27.
When I went to school and was taught letters and words I remember it so well. They were not easy to learn and I had to make patterns and go over them constantly.
I remember in particular learning Bed, I had to learn it by remembering B was the hardboard and small d was the feet and carried that through I life, I had to keep reminding myself until maybe 10 about that pattern, every time I came across those letters and it wasn't limited to those letters, I had ways to cope with letters. The letters also jump around on me.
I understand most people look at a word and can spell it for the rest of their life, I can't.
I had to go over and over and over maths too like letters and words maybe 20 times more than the average person to understand the concept.
I was streamed top groups at school because I worked really really hard and got zero help at school or home. I have above average IQ, and when I took my dyslexia test I had excellent comprehension skills.
I read out loud like a small child and spell like one.
I can understand language people speak and write yet I don't use it so my writing looks simple.
There are people out there way worse than me.
I am sure that's why people like Trump do so well, he speaks quite simply to people.
I think he is more skilled with his accurate simple langue to many who understand him, than someone who swallowed a treasurus, talking to small numbers of people, because most of the population haven't a clue what they are talking about.