Security engineers don't actually recite trivia facts about TLS in their job. Their job is more like, know when you should use TLS and when you shouldn't and know what it does and does not protect against.

A security engineer is just as likely to derive a tls cipher config from first principles instead of googling/looking at ssllabs as a programmer is likely to reverse a binary tree from scratch instead of using a library or searching stack overflow.

Engineers (of any stripe) aren't hired to recite random knowledge, they're hired to know what knowledge is appropriate to apply to a particular situation.