I was using uBlock for too long, and when I switched to Brave at first I thought to disable Brave Shields -and use uBlock again- since the Shields didn’t have an easy eye dropper tool to select what to block.
Then I simply tried the Inspector (Ctrl+Shift+I), took me a little while since I haven’t used it for a long time, but managed to block that popup in seconds.
If you practice you’ll get it right from the first time, every time.
Here’s a video about it: