Would you feel similarly about AirBnB hosts leaving their contact information in the physical location so you could arrange bookings outside the platform? Just

Would you feel similarly about AirBnB hosts leaving their contact information in the physical location so you could arrange bookings outside the platform? Just curious because I can see the value platforms provide in discovery and "bringing the customers to you" but once you have proved your worth to the customer, it's not clear to me why a platform-middleman is still needed.