I disagree that current onshore wind in France is not 50%, only 21%; also maybe you were comparing the low capacity factor of French nuclear because it is used for load following and curtailed in summer because it is scaled for winter usage using restive heating. And comparing it to offshore with intermitttent power, not dispatchable in the best location. Totally misleading.
Comparing worst capacity factor (for cited reasons) with best CF without saying it is offshore in some of the best location is misleading. Also is comparing dispatchable and intermittent/fatal. There a other factors to consider like reserve ratio, or how the production can cover the power needs over the year, it gives hints at how you need to scale seasonal storage.