This is specifically a hack to get around listing and booking costs. I'm surprised the big players like Expedia or Google or Booking haven't started cracking down on it themselves.
https://www.acm.nl/en/publications/airbnb-will-now-use-clear...
https://www.acm.nl/en/publications/bookingcom-commits-adjust...
https://ec.europa.eu/commission/presscorner/detail/en/ip_20_...
I agree that resort fees are BS, but hotel listing sites are also an absolute coordinated shakedown on hotels and this is their response.
Some booking sites will have an option to show prices after all fees, but it will never be on by default.