Monster trio is a given name, doesn't matter n it's irrelevant.
There was never a monster trio since Jinbe was there and Zoro was called VC by Bartlomeo, Urouge and even in the Vivre card, Lanjitards dismiss those so why should I care about something that barely mentioned.
Zoro got dynamic with both luffy and Zoro, so he can share moments with both so it doesn't matter