Performance metrics are an art across each of those disciplines. Sales and marketing also have the advantage of being around since the dawn of commerce, while Software Engineering is a baby by comparison. Software Engineering has also been burned by ridiculous metrics like lines of code written.

Simply not testing their code, outside of perhaps a superficial AI-generated unit test. My advice: there are a lot of things you should not trust in software development (function inputs, APIs, LLMs), and your code is no exception. Until it does the thing you need it to, don't trust that it will.