All the confessions are highly subjective. If someone tried a refactor like the one at https://refactoring.com/catalog/replaceConditionalWithPolymo... there is a decent chance it should get picked up and reverted on code review.

Taking a switch statement and spreading it out over 3x classes is not a general improvement, it is very context specific. It makes the code difficult to navigate because what used to all be in one spot and easy to read is now spread out who-knows-where and there might be a special case lurking somewhere.