I completely agree with you, Jim! It is incredibly frustrating when you are just trying to handle basic business or check urgent messages and you have to keep clicking away marketing pop-ups.
Airbnb has been rolling out a lot of new travel updates recently, and their system aggressively pushes these notifications to users. Quick tip to stop it: Try downloading the official Airbnb Mobile App on your phone if you haven't already. The app tends to have much cleaner navigation with fewer intrusive pop-ups compared to the desktop website.