Brave focuses and spends more of their resources on privacy, brave rewards compared to user customization. While vivaldi and opera (or even edge) have quite a lot of customization options for users. Is this feature available in chromium? It looks to me that it google made it only on chrome. If so, then it will take about a year to see it in brave. If it is in chromium it will take a month or two to see it in brave (dates given are not accurate).