'Network permission' notifications for apps in Android 10 - turning off
Getting rid of that annoying notifications is possible but not easy. I had exactly the same problem and used Automate https://play.google.com/store/apps/details?id=com.llamalab.automate to solve it.
In Automate I created a flow that waits for a notification to appear (you can define conditions which must be met to select only these unwanted notifications) and then executes 'snooze' operation on it. The length of the snooze time is freely adjustable, I chose 48 hours. That solved the problem once and for all.