Never has been a point. You get paid for the ads appearing. They give you absolutely nothing for clicking on ads.
Brave does not reward users for clicking on the notifications. Brave’s position is that users should only click on ads that they have a genuine interest in engaging with.
https://support.brave.com/hc/en-us/articles/360026361072-Brave-Ads-FAQ
As to what’s going on, I kind of dip into that at Logged me out and got no credit for Ads for 2 mos - #10 by Saoiray