which will suppress this warning

"I'm going to be annoying you until you do something about it" It is recommending that you take some sort of action, that choice is up to you as the user. In fact, the older way of disabling the warning was called advice.defaultBranchName

AFAIK git is still Linus Trovalds' project and one thing he is known for is "you dont fuckin break user space". That is acknowledged in the pull request https://github.com/git/git/pull/921

"will minimize disruption for Git's users and will include appropriate deprecation periods".

Linus is also a fuck-your-feelings kind of guy so deprecation_period == linus_date_of_death. No, I'm not implying Linus is racist/bigot, just that he feels that strongly about breaking user experience.

Git in of itself doesn’t give a shit about.

You're right...and that's why its unbelievable to me how some people are still (it has been nearly 4 years since that PR above) resistant to change this one little thing. This is just the initial branch that we're talking about here. Git doesn't care if you:

﬌ git init
Initialized empty Git repository in /home/xxxxxx/tmp/.git/

﬌ touch foo && git add foo && git commit -am "foo"
[main (root-commit) 9c74dd1] foo
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 foo

﬌ git branch -a            
* main

﬌ git checkout -b bar
Switched to a new branch 'bar'

﬌ git branch -d main
Deleted branch main (was 9c74dd1).

﬌ git branch -a
* bar

﬌ git log      
commit 9c74dd18d493fec727e6ce9e4ba71ed356dd970d (HEAD -> bar)
Author: Butters
Date:   Thu Aug 22 00:14:44 2024 -0400

    foo