I've never been fond of the argument that there should be a professional software engineer certification, but hearing people like you being presented with the potential dangers and just going 'oh yeah just go with a better test suite and you can just wing it' makes me seriously reconsider.

Vibe code administrative systems for your local golf club to your hearts desire for all I care, god forbid somebody will have to stand around a bit longer before going for their 9 holes. But safety critical equipment is not the place to fuck around with the code prediction machines that have existed for 4 years, have been writing more-or-less acceptable code for 2, and will still regularly refer to themselves as MechaHitler or just make up shit. "Yes you're absolutely correct, I was wrong" doesn't help you one bit if you have just been chewed up by heavy machinery, and the fact that people like you exist who go 'oh just a few more more unit tests surely will fix it' is a terrifying thought.