There is no difference in noise for me between curly braces or keywords because my brain parses both as a single token. I don't process "e"-"n"-"d", it is just one thing "end", same as a curly brace is.

Of course some people can't read words by shape and instead have to sound out the individual letters every time, so I guess it can be more annoying for some people.

And I don't mean to be patronizing, I actually have the opposite problem. I am faster at parsing whole words than symbols which is why I really struggle with modern UI that solely relies on icons. It drives me mad.