alt Hacker NewsOK, so rooftop solar is a higher <currency-unit>/kW solar farm. That's one argument against it.
On the other hand, it is also distributed which from some perspectives is a benefit, and is also do-able with very little planning and grid extension. So that's one argument for it.
How things come out on balance depends a bit on what you value and how you imagine the future.
The generation is distributed. That only benefits the people who have panels on their rooftops. If we want them to share the excess with others during a power outage it requires further grid investment.
I think homeowners should install solar panels and batteries where it makes economic sense. If there's money left over after funding utility-scale solar then it should be used for EV incentives and/or funding electrified mass transit. The whole point is to electrify everything rapidly and reduce carbon emissions.