I have noticed “LOL” is like the new way office people express passive aggressive thoughts. It’s either they’re really mad and they add “lol” to soften the message. Or they really want to challenge you directly so they ask a blunt question like “What the hell is going on with this project? lol” “As established by my previous email, which I’ve attached for your convenience, we’ve already concluded this matter.”
The ultimate act of aggression and “I told you so” is when someone forwards an email you missed and cc’s everyone and their mother.
It’s modern warfare! And it’s fascinating.