I don't get why Yamao fans
voluntarily compare Luffy sending her to babysit Momo to him trusting Franky to rescue his nakama and somehow think it's a good thing for them.
1. (The obvious) Luffy calls Franky by his actual name. Not Franko/Frank-guy like Yamao
2. There's tons of weight behind Luffy entrusting one of his own nakama to Franky since he was a former enemy that previously also beat up one of Luffy's nakama
3. Robin is an actual straw hat. By Franky helping her it brings Franky closer to the crew. By Yamao helping Momo it brings her closer...to Momo. Simple as.
You wanna know the moment that Luffy telling Yamao to help actually resembles...?
1. Calls Cabbage by his nickname
2. Cavendish accepts Luffy's decision and gives up trying to fight the main boss
2. Cavendish protected Law, who isn't a straw hat
Trying to claim Yamao's already a straw hat cuz Luffy told her to help an ally out, is on par with Cavendish's mental gymnastics in the above panel.