Choices
Many sites would love to reduce or eliminate their dependence on ads. This includes most 'magazine' sites, which always have to worry about losing their objectivity - or being accused of losing it - based on the revenue they get from the very companies they need to cover.
Also, don't forget that ad-blocking will keep sites honest. Taking ad revenue and Brave revenue isn't one of the options - the choice is between taking zero ad revenue from blocked ads vs taking what Brave can collect. Many sites will embrace this, and offer ad-free browsing to Brave (or other solutions) that provide them with similar (or better) revenue.
I predict this model will catch on quickly. However, I'm not willing to change my browser to do it. I think Flattr Plus is a better approach - an add-in to whatever you're already using. I expect there will be other choices very soon.
Biting the hand that feeds IT
