If nothing else, not capitalizing first letters and proper nouns will just look weird to many readers. If there's no capitalization in a sentence, I'm inclined to assume the writer accidentally mistyped an incomplete sentence or phrase. Not capitalizing proper nouns will create significant confusion since some proper nouns are also general terms.
"after friday, land is out."
Is that a reference to land as in earth or is it a reference to someone whose last name is Land?
Making communication more difficult by requiring your reader to spend more effort to parse your intended message might not be a good idea.
Kidnapper, human trafficker, genocidal foot soldier