I find it hard to believe because I work at an adjacent company who has made similar claims and it is complete bullshit.

I do think there is some about of “AI provided a smart complete and the developer hit ‘tab’ to take the changes” equalling “this code was written by AI” in some metrics that go to the execs. And since the execs mandated high AI use everyone is fine just saying they have high AI use regardless of how true it is.