It's not factually wrong, but it implies that this is something specific to Git, and possibly might even be interpreted that it is Git's fault.

In reality it's macOS shipping the outdated certificates, and it affects various other command-line tools, like Curl.

Because it isn't got specifically, it is anything that uses the installation of OpenSSL provided by Apple as part of macOS (at least is my understanding).

The problem is that the title implies that it's somehow the fault of the package. That's it, that's the problem; the title is disingenuous in its claim.

"Ten days later, Apple Image Viewer on macOS still trusts the compromised eMudhra certificates" doesn't sound as catchy, but is equally correct because the apps use system CA.