the original article confuses clarity with formality you can be perfectly clear in lowercase and with sparse punctuation acronyms can be ambiguous, but to say

the original article confuses clarity with formality you can be perfectly clear in lowercase and with sparse punctuation acronyms can be ambiguous, but to say then that we should all write formally is a huge leap frankly anyone who can't write clearly like this is a poor writer i also doubt it really excludes non-native speakers unless you're using a lot of slang/abbreviations