I think you are perhaps missing the point. Investing into these techniques [2] enables you to do unhinged things. Such as building a compiler whilst you are AFK [1].
What do you define as a production system? Are you aware that one can generate TLA+ specifications, then code generate from these specifications and assert that the implementation matches the TLA+ spec?
[1] https://x.com/i/broadcasts/1OyJALVOnEzGb
[2] https://ghuntley.com/ralph