But the major git hosting platforms are only using 'main' as the default for new branches, and there is significant enough social stigma for new projects that it's preferred to use main.
I don't have precise statistics, but I would happily wager that even though master was the default for so long that the majority of git repositories that have been contributed to in the last 30 days are not 'master' as the default branch name.
To change a default with such inertia as to completely skew the demographic in favour of the new rather than the status quo: I would certainly merit that as success.