I've read that the startup process of building new or subsequent nuclear plants will be considerably shorter due to the groundwork for the Finnish reactor paving the way.

Which seems to topple most of your argument.

As for wind turbines on land, they require a lot more space for the same yield, space which is stolen or irreversibly destroyed for the local fauna. Here in Norway, wind turbines near settlements are also forced to run on diminished capacity at night because of the health problems people associate with the 24/7 humming and whoosh noises (not kidding).