I mean... maybe in super shitty models? IIRC, it mostly just nukes itself at 100% power, which seldom crests 800F in the actual oven part, which won't even necessarily see an iron rack glowing red, let alone any respectable alloy or ceramic coating.

Definitely would be far less than surprised if some shitfuck capitalist designed an oven that would cook the control bits, which should be a whole different question.

Yes, but way more than max, typically.

Lots of engineers in my cohort talked about defeating the safety protocols of an oven cleaning cycle to make pizza or naan or tandoori.