Eh, child characters can really lower the tension in certain situations, so I get it. Like, when the Beast Pirates can't kill a single 8-year-old girl, you really start to question their overall competency as a Yonkou crew.
Also, Tama got a ridiculous level of focus in Wano, getting a good amount of panels in all three arcs, having an Ace backstory, and making a crew promise with Luffy.
Hiyori and Carrot fans hating Tama makes all the sense in the world; at least Carrot got hers in Whole Cake, though.
Tama got so much more screentime than THE PRINCESS OF THE FUCKING COUNTRY, I can get why you'd hate her guts. Same thing with Yamato. All those panels, just to get left behind. WTF was the point? Tama and Yamato needed to lose some panels and have them given to Hiyori, and Scabbards like Izou.
If Act 4 somehow is real, I hope Hiyori gets the same attention/feats Momo got in Act 3. At this point it feels like Oda really whiffed on her character.