The last two are chromium-based and thus will likely follow chrome's extension system too.
Brave has built in ad blocking.
I use brave but some brave allowed ads seep through. I have no issue with ads; I just don't like tracking and insane JavaScript pop ups taking over the browser without the user invoking a deliberate action.
Both of them have already said they will not implement these changes in their Chromium branches.
Unfortunately for Google, Chrome is open source, and Google will no longer be the dominant Chromium branch if they keep making mistakes like this.