Git itself does not use that standard yet, so at least now there are two competing standards.

Just ran git init in a brand new empty directory, and while it did create a master branch by default, it also printed out a very descriptive message explaining how you can change that branch name, how you can configure git to use something else by default, and other standards that are commonly used.

Also, there’s nothing saying your local branch name has to match the upstream. That’s the beauty of git - you have the freedom to set it up pretty much however you want locally.