Hypocrisy is insufficiently precise. It is possible to disingenuously engage in any particular activity. If you wish to describe a specific behavior, then a better descriptor is necessary. On top of that, not all virtue signaling is necessarily disingenuous.

And all terms are made up, and the political leanings of the person who supposedly coined the phrase is irrelevant to its applicability.

You’re using the term disingenuous incorrectly so excuse me while I disregard your opinion on language entirely.