This is why you have to be level 2 to report posts. I see nothing wrong with the information provided you regarding the use of correct terminology. We all forget and use incorrect symbols at times so it is good to be reminded. It is especially important when talking about size, space, speed, bandwidth etc. a "b" is a lot different than a "B" and could significantly change a response or cause confusion to the poster.
Just for clarification a "b" refers to a "bit" and a "B" refers to a "byte". Big difference and could change the understanding of a post.
FWIW, I found the response you are referring to very helpful.