@Emiel1 @Ute42
Thank you for reply and more detailed explanation than I (and evidently Ute as well) expected you to divulge.
I would just explain that I quipped about your first example because it's self-evident to Hosts who are in the habit to cross reference Reviews. I've ritually done it from day one.
I've not gone beyond this first example as I'm not technically minded so I certainly wouldn't repeat 'everybody knows it' re 2nd & 3rd.
I much prefer to view Guest Profile photo, but have adapted to deal with Enquirers without it.
The adaptation hasn't been difficult as anyway I've never placed 100% faith in Reviews.
I have also never subscribed to IB as a live-in host, and am in the habit of screening Guests to my satisfaction. Most of it via the exchanges between us.
My conversion rate of Enquiries to Bookings over 6 years of hosting has remained remarkably stable at about 35%. I turn down about 1/3rd and the other 1/3rd decide not to book elsewhere.
In short, my decision making hasn't changed profoundly. I'm just a bit more cautious if I can't see a face.
It's a normal human response.
Lastly, Airbnb of course are wholly inconsistent in blanking Guest photo prior to booking, while Host profile is visible to Guests prior to booking.