Earlier quoted context omitted.
Yes. All these examples seem to stem from a fundamental misunderstanding about what a flywheel is and what it can do. They are primarily for storing and releasing energy; they don’t generate their own momentum. https://en.m.wikipedia.org/wiki/Flywheel
Who cares? Seriously, it’s a metaphor that no one has issues understanding, so why the pedantic nitpicking?
Flywheels aren’t some kind of academics only term. If you’ve ever touched a mechanical fishing rod, you have used a fly wheel.