

This is incorrect. Functional code bases exist in many production environments. Twitter (pre musk) migrated their bloated code base TO Scala because functional code bases are easier to maintain and understand.
If you think about it, it makes sense, side effect free code will be easier to maintain just due to the lack of side effects.
Not saying we shouldn’t do both, but in reality waiting to destroy capitalism before fixing the grid just means you have too much theory and not enough praxis.