I have a story somewhat related to this because I'm a speed reader.

In my elementary school, I used to read as much as possible. Kindergarten teacher was surprised at how quickly I was reading books but she was extremely supportive so after making sure I knew what the book was about she personally helped me with vocabulary and reading comprehension. I still remember her name to this day and give her credit for why I used to go into school happily (until the dreaded years of high school)

But... 1st grade I had a horrible teacher. I don't know why she had everything against me. Still remember that she made me reread a book 4 times because she didn't believe I knew what I was reading. Didn't even ask me questions to test my reading comprehension (Well she asked one but I got it wrong but she still didn't ask more). >!I have a lot more stories about her but that's for another subreddit.!<

I think this is why some people don't like reading in general. They can get discouraged pretty easily when younger if there's not enough support. I was lucky with loving parents and great teachers but that one year of having a terrible teacher almost made me stop reading for some time.