It's always been like this even before the Naruto ending.
Anyone remember Road to Ninja when Naruto was a complete kitten that treated Naruto like kitten and believed that she was entitled to Naruto and if anyone else even looked at him she would kill them? Yeah, they LOVE that Hinata. They think she is amazing badass and she is such a perfect woman. So obviously there is massive bias. RtN HInata and the Real Hinata are both perfect and Sakura is a kitten in both forms. This is how you know the bias is real. Ask them if they think RtN Hinata is perfect rendition to Hinata...and if they say yes...they are so biased.
I still find it funny that they say Hinata can beat Sakura, but everytime I see Hinata in the show....she is in the hospital and got her ass kicked.
They are in love with the idea of Hinata rather than the reality of her actual character.