I think the inverse has proven to be largely true. If a home that uses effectively net-zero power is still connected the grid, it becomes a liability to grid stablity and expense.

There still needs to be enough power to supply to all those homes in the event of a protracted time where solar is unavailable. It gets less applicable as homes start to get multi-day battery banks installed, but those are incredibly rare since they are too expensive.

The whole "wealthy homeowners get subsidized solar and then effectively free backup power paid for by everyone else" needs to end.