if the forking is done only to remove the ref link, I think fork brave to braver will not have a good result. Because, as mentioned before, brave team has fixed it and removed all the ref links from the suggestion URL. I would also hesitate to use braver if the development is still the same as the current brave that will be able to attract users. Because,  if forking is only done with a little difference, I'm sure it won't be able to take over Brave's position. The simple thing is "using it or leave it". IMO For users who are disappointed with Brave, they will choose to leave everything connected to Brave including using the fork version.