She's not a mere weakling so that she can't pull him out even if Naruto couldn't move even i don't degrade Hinata that much she's a freaking shinobi have you seen what they are able to do ?
Also the time wasn't so short like i said Hinata had the time to see were the rods were gonna hit she had the time to established that then she jumps in front of Naruto and just stood there were for the time she did that she could have pulled a simple move that doesn't require much effort to pull him of to the side and even Neji had the time to catch up to them the time was certainly not short for a simple move like that .
Hinata's father said that they are not able to deflect all of the rods with their jutsu that's what he meant not that they weren't able to escape from them there is difference , also like i said there are tons of ways that they could have done it but it was done like this just so Neji could die the scene was rather forced this is so obvious and it was for the Huyga subplot i'm sorry but i'm not gonna give credit to Hinata for this when it comes to Naruto she has a one trick mind and that is what's hurting her character .
lets assume you are right,but thats still not a reason to bash a character because she attempted to save the life of another at the cost of her own life..lets apreciate this fact,i know that many of us are wishing sakura was in hinata's place ....dont lie to me..i know that if that would had happen,many of us would go around praising sakura at this point. while i loved hinata's speech,it was so emotional,mature and heartbreaking i certainly dont like several things about this whole naruhina/neji dying moment:
-neji didnt confessed..im 90% certain that neji had romantic feelings for hinata but he chose to die without relieving this pain from his chest..so im kinda sad for that
-hinata didnt even grieved that hard for neji,i mean she cried for a few seconds,then when she looked angrily at madara and obito, neji colapsed from naruto's arms,she seemed to look like ''ouuh neji i almost forgot you just died a few moments ago''..her tears completely vanished away..kishimoto could had at least draw her holding neji in her arms,hell nejinaru moment seemed a lot more emotional than the nejihina one
-hinata recieved a big chunk of character development,with her being able to give an emotional speech without stuttering and even touch naruto's face without faiting,but to me all that development went back to 0 simply because neji's corpse was at her feet,you can undoubtedly say neji died for her as well,you can also assume neji risked his life because hinata was there but lets say this is an assumption,but all hinata does is fangirl about naruto's strong and manly hand..i didnt liked that,it didnt seem normal to me..in manga,even lee showed more emotion and regret than her
maybe thats why i cannot like naruhina..i simply cannot stand seeing a female character being so depended and centered around a male character.,.i still wish though that sakura could pull a moment like hinata,and attempt to commit suicide for him,but given the fact she has this new power that kinda makes her immortal,i doubt i will see something like that