Reverse power flow at the primary substation level is an issue, but even moreso is the idea that you push 4x the current during peak generating periods that you would normally consume.
To make distributed generation work you need: distributed energy storage; capacity-responsive demand; or a high level of diversity in sources. It is difficult to get the diversity with solar except in partly cloudy conditions during the day, and the economics of small wind turbines are difficult to reconcile.
It is hard for me to imagine how nuclear provides compatibility with renewable; the compatibility always comes in the form of energy storage which smooths out the load profile. The best use-case is to have enough batteries to supply your loads from late afternoon through bedtime, and switch to utility to bridge through the night, maybe with a little small-scale wind thrown in at night.