I personally think the report of bleeding users is exaggerated, Most people I know(yes its a biased sample group) have left chrome, and its 50-49 split between brave and firefox, with the 1% being on safari(this metrics includes mobile users) and most of these people have turned on some kind of do not track/do not send analytics checkmark, plus people who are miffed about firefox switch to something based on firefox, which imo are just more users of firefox.