This is what's missing in most teams. There's a bright line between throwaway almost fully vibe-coded, cursorily architected features on a product and designing a scalable production-ready product and building it. I don't need a mental model of how to build a prototype, I absolutely need one for something I'm putting in production that is expected to scale, and where failures are acceptable but failure modes need to be known.
Almost everyone misses this in going the whole AI hog, or in going the no-AI hog.
Once I build a good mental model of how my service should work and design it properly, all the scaffolding is much easier to outsource, and that's a speed up but I still own the code because I know what everything does and my changes to the product are well thought out. For throw-away prototypes its 5x this output because the hard part of actually thinking the problem through doesn't really matter its just about getting everyone to agree on one direction of output.