Actually, it did not kill WWII reenactors. It brought more people in as such. Reenactors become historians and collectors, and change impressions as they grow within the hobby.
IMO, as a reenactor/living historian, I say the more the better.
As a fellow reenactor, I would say Quality before quantity, but you have a point also. It is cool to have another eenactor on the FR...what unit do you belong to.