Quote from @Leslie Anne Morris:
I'm in London at industry events here this week. I met the Booking.com team and they have changes coming and are particularly targeting STR hosts in the USA. They want the feedback. They'll listen! I'd watch for more detail to come from them. I gave them my feedback which is largely similar to yours, I also told them they are very expensive.
Leslie, booking.com appears to be at the vanguard of companies that pretend to care about their revenue source but steadfastly ignore them. They say "your experience is important to us", give surveys, and put feedback notices at the bottom of their pages, but when you call them, expect to spend hours talking to 2–4 people only to discover they cannot help you. This is my experience
every time I call them, and I've called a lot. The CSAs you talk to are sincerely trying to help, but most of them are paralyzed to go off script and, according to one of the two actual Americans I spoke with, most of them are very new and don't know how to help people, especially in a foreign language (English).