So we don’t have smoking gun evidence that Windows 11 is broken trash literally because of vibe coding. But Windows 11 feels like the most vibe coded thing ever. Nobody cared about Windows 11 working. Microsoft, where quality is job number 55 or so!
I think the timelines don't quite match for that, when Windows 11 came out the LLMs couldn't even output code that compiled more than half the time. However, the moment I've learnt the start menu was coded in React I knew the age of ~~man~~ Windows was over. I don't know how good the guy behind it was in internal politics but everyone on the path from the idea to pushing it to main should be tried for treason and sent to hard labour (debugging the Azure web UI).
I think this was the good old artisinal vibe coding of the previous era, where you still had to not care about quality manually.