@Zacharias0, lol, did you leave the Lore ipsum exemple text, when setting up the profile ?
I added it to my rules, that for same or next day bookings, I need the ETA with the booking, to be able to adapt to the guest's shedule. Otherwise they accept to adapt to my shedule, which I will communicate to them via airbnb.
(That after a few really infuriating people with no communication, where I had talked longer to the helpline than to a normal guest - cancellation offered by the staffer).
I have it also in the message that pops up before booking (or just afterwards).
All in all, most communicate it now immediately, some stay vague "I'll arrive in the evening" till I ask for an hour "What do you mean by evening? 5 pm, 10 pm, just before midnight?"
I could even let the door unlocked, and woud do that with repeat guests, but I would not really feel safe going to sleep with someone arriving whilst I'm asleep, who is not able to communicate.
I've had guests stuck in a train somewhere, who manage to get a local to call or text me. If you get a text at 9pm, that the person is stuck and won't arrive at 10, but at an unknown hour, as the train is not moving and they don't know why, at least you know you can enjoy your evening - and look up the train info and send them a text back, why they are stuck and how long it will take.
I don't believe it increases the guest's comfort to be "free" to torture the host. Everyone, who ever experienced me in a biting mood, will confirm that a bit of planning and a message are preferable to that 😉