A minor quibble with your write-up: semantically it is much closer to reality to refer to renewables as variable rather than intermittent.

Intermittent is feeding the anti-renewables propaganda as it implies something that starts and stops unpredictably while the reality is that renewables (for the vast majority of them) are operating with on a gradient that is both broadly predictable and similarly addressed to the inherent variability of electricity demand (no-one calls demand intermittent when in fact you switch on a 2 kW boiler suddenly...)

Orthodoxy is not a religion.