Your point is not really a point either: every power plant can be ejected from the network in such cases, and not just nuclear ones. The remark here is that it precisely happened to a nuclear first.
Nuclear can't ramp up or down fast. As the grid loses generation capacity the load on the base-load type capacity becomes too variable and that capacity has to be brought offline. It's that simple. Nuclear wasn't ejected because there was too much of it but because there was not enough capacity of all types, especially of the gas-fired type that can most readily respond to solar and wind drop-off.
My point is "moar nuclear" guarantees nothing as evidenced by what happened _in France_ (hint: not exactly the same as in Spain even if same underlying direct cause). Your remark, at best, only adds to my point, and is not a counterargument to mine. And for the record, very few power stations can ramp up "fast" or "down" for the level required here -- this is not something that uniquely applies to nuclear. Even oft-quoted gas stations still measure "ramp up" in hours.
