[xyzzy123]

For apps that are not successful, the entire output is waste, and the majority of the emissions burden is carbon output of the developers.

For work of speculative value (most startups...), optimising for dev efficiency is IMHO the right thing to do.

[jmartin2683]

The only problem is that then you end up married to your mountain of abstractions. Designing things to work as intended from the outset is, in my experience, always the better path. It’s like ‘buy once, cry once’ for technical debt/effort.