I suspect that the community is overall quite happy with increased adoption being a non-goal. That is, it does not need to shift to an engineering-mindset because it does not value the consequences of that shift.
The inofficial motto of 'avoid "success at all costs"' is not a joke. It's easy-ish to achieve success if you allow yourself to pander to the masses who don't always understand what they are missing, and there's always been an element in the Haskell community that tries to do what's right, notwithstanding what the large masses think.
This desire is usually expressed with sentiments like "let's make this easier to learn" and "Let's fix this so it's not a footgun", and not "success at all cost".
How about: the least-valued of all goals?