I never quite understood that ship, because to my understanding there haven’t been many moments (certainly nowhere near intimate) between Robin and Franky.
The only ones I can think of are ones where she got mad at him for something. Like during Thriller Bark when Franky wanted to dock with the other Straw Hats to become a robot and during Punk Hazard when he was acting inappropriate in Chopper’s body.
If you ask me, Zoro and Robin have had better interactions. I don’t see why you would’ve gotten banned for that one thing you said though. It shouldn’t of been that big of a deal, providing you’re not leaving out any important details.