Sounds maybe like a 'stress interview'[0], basically they intentionally piss you off to see how you respond to stress. In any event, you dodged a bullet with them, who'd want to work in a place like that?
I took a criminology class in the late 90’s where the professor talked about how unethical stress interviews were (for police department hiring, of all things) and encouraged applicants to walk out of any PD that attempted to give one.
I think it’s sound advice then and now.
Edit: I should add that the professor was a former Chief of Police for an SF Bay Area city.
Yeah, I have some old books from my dad that taught people how to be ready for a stress interview. Often it's something like having your seat in a place where light shines in your eyes, loud background noises, or a panel of interviewers staring at you.
It's probably more suited for say, sales job, but doesn't represent engineering well. Unless it does, which you probably want to get out of there as fast as possible.
I think it’s sound advice then and now.
Edit: I should add that the professor was a former Chief of Police for an SF Bay Area city.