There are plenty of real world situations where neither the requirements nor the prerequisites value correctness, but getting an 80% or even 99% correct set of results while flagging the unhandled cases is very valuable.

Python as a structured upgrade to Excel.

I'd say the most immediate value/payoff of correctness is ensuring your own code is consistent with what you think it does rather than correct wrt to some sort of external specification.

just spit out a bunch of code correct or incorrect looks productive and good on paper.