I've noticed ChatGPT/GH Copilot is also particularly bad at PowerShell (I do sysadminy things), especially anything to do with the MS Graph API

thewebguyd on Hacker News

In the thread “AI Is Stifling Tech Adoption”, replying to this comment

Helped: Python tasks were more or less spot on.

Got in the way: PowerShell output was bad, making up cmdlets often.