A quote from one of your sources...
“IF YOU WRITE IN CAPITALS IT SEEMS AS IF YOU ARE SHOUTING.”
If you see any post where I made the entire post in caps, feel free to post it as an example. Otherwise, your complaint has no more validity than saying someone who uses capitals at the begining of a sentence is yelling.
Go ahead, BORE EVERYONE WITH CAPITALS FOR EMPHASIS. Can't say no one has ever told you.