i.e. "any mason can build a brick house, but an architect will create an ugly box that no mason would ever have built".
Edit: I love me a craftsman bungalow but matching dry rotted custom milled trim from 90 years ago is an mfer.
Of course building a new house is expensive. There are a lot of sunk costs in an existing house and generally while there is a lot to not like about an old house, in generally keeping it and doing small remodels to make it better is a better use of money even though ideally you would replace it.