As much as I think this should just be common sense, when I see this URL in someone's status message/bio on a work messaging platform, it strikes me as condescending and unprofessional.
This would work great as a bot in your chat server that autoreplies to these single word greetings
"In our work environment, synchronous communication is important! If you were intending to set up synchronous communication, please mention why, along with your greeting!"
While I like the concept from one angle, on another angle I'm not reading a fucking manual every time I want to talk to someone, it's just not happening. Especially since we know people will just start adding shit to it every time something happens they don't like and we'll end up with pages of interaction rules. No thanks.
I have seen this for a lot of people where I work and frankly I don't read those. If I offend you in some obscure way, fine tell me and I'll try to avoid it next time. But no I'm not reading your user manual first.
I could see that but only if the bio might be read by paying customers of your company. Internally, encouraging people to use their and your time more productively seems like a good idea.. excessive deference in the workplace is communication blocker.
I would never post something like this. I'm just as peeved by "hello" type chat messages as everyone else here, just as I am when someone walks into my office and starts talking to me while I'm doing deep work. But I never want to make a colleague feel bad by doing so. The long term benefits of maintaining a warm and friendly work environment far outweigh the occasional annoyance. Also, most people are smart enough to pick up on subtle involuntary social cues. There aren't many repeat offenders.