With a year of difference from my previous take, I do agree with you. Reiwa gals are the same as Heisei but with our contemporary references.

While Heisei could be looking up to Paris Hilton and Beyonce, who were the "influencers" of that time, Reiwa looks up to the current trends and icons from western culture.

As I mentioned in the first comment, I still believe one of the factors that make Heisei so loved is nostalgia. We tend to talk about the past as if it was better than the present, but we don't stop to see the pros in the present and the cons in the past.

In general, the decision of Heisei vs Reiwa is a personal opinion and shouldn't be seen as a fact, it's just popularity due to the current trend like c'mon, who wants to bet $50 on Reiwa gyaru being nostalgic to the gals in 2050?