Since reports and reviews that the add-in isn't working are met with instruction to use it differently, I figured I would demonstrate that it does not appear to work.
Here's my project in VSCode, looking at a sarif file I generated with codeql:

And here's what I see in the Error List after opening the same file with the same project in VS 2022:

Those errors you do see were not in the .sarif - they're from code analysis. Whatever the add-in is supposed to be doing with the .sarif file, it doesn't appear to be doing it.
Proof the extension is installed:

I can provide any other diagnostics you want on request.
Since reports and reviews that the add-in isn't working are met with instruction to use it differently, I figured I would demonstrate that it does not appear to work.
Here's my project in VSCode, looking at a sarif file I generated with codeql:

And here's what I see in the Error List after opening the same file with the same project in VS 2022:

Those errors you do see were not in the .sarif - they're from code analysis. Whatever the add-in is supposed to be doing with the .sarif file, it doesn't appear to be doing it.
Proof the extension is installed:

I can provide any other diagnostics you want on request.