Perfectionism is inherently tied to incoherence of thought, because a thought that is perfect in design leads to a perfect resulting action, and "perfectionism" refers to someone that is not taking perfect actions. A perfectionist is often making reactive changes or additions to address specific criticisms, without demonstrating performance at developing or finishing the project as a whole.

Digital technologies are flypaper for perfectionists because they enable a lack of commitment: everything is one undo or abstraction layer away.

I agree with what you're saying, but can't resist this little niggle...

> it's easier and more fun to trim the sails than build the rest of the ship.

That depends on the personality of the dev. Some devs consider the main body of the ship to be the easier and more fun thing. (I suspect that how fun a task is is correlated with how easy it feels to do).