It's also a misinterpretation of the "nohello", which is about dragging things out over multiple messages and time to put the actual message. Just adding some pleasantries at the beginning isn't the same thing.
Right. Nohello isn't about not saying hello. It's about not sending a message with nothing but a greeting and leaving the recipient waiting to find out what you want. It's about being efficient and respectful of the recipient's time.
If you're so pathologically "efficient" that you are bothered by reading the word "Hello" in "Hello. Please join the bridge. The site is down.", that's a you problem, not a hello problem.