It claims that, then promptly proceeds to showcase a bunch of benchmarks.

It works if you can prove it, but you know, Microsoft didnt

You aren't wrong, the field is moving to a world where we do less in the code editor, so autocomplete is not needed any more. I've only manually edited code a few times in the last month. Haven't used autocomplete in 6+ months since I left Copilot to build my own agent harness (I'm now mainly using OpenCode)