This is true in a very practical sense: Product people will not care about engineering specifics. But that being said, I think you're missing the important take

This is true in a very practical sense: Product people will not care about engineering specifics. But that being said, I think you're missing the important take-away from that conclusion: You must decide that it's necessary. As an engineer, you are the most qualified individual to determine if something is technically necessary. Just like you decided that proper indentation, unit tests, refactors, etc. are important, so must we decide that other elements are.