We actually do have standards for some software engineering. Claude isn’t writing anything that is life/death critical.
Static analysis for example. Although I’ve heard that LLMs can now do that if a user wanted it.
I assume the standards you're referring to are things like The MISRA guidelines, or the IEC standards (specifically 62304). In my experience, these are applied in very "check-the-box" ways that often undermine their intent; Very very few organizations take software safety seriously.