To be fair, the only part of this new ninja tech, people hated was the ligh- I mean chakra saber and the new mini gun Ao was holding. The rest were atleast good enough.
Obviously the ninja tech was created to protect the planet against the threat. And I guess the anime will start to show it being made in the begining. Considering the movie just picked up with the kote being complete. The anime will obviously show how theu finally decide to take Tech as a chance and show it's progress eventually leading to the movie. Considering that's what was happening, as the Five kage discussed. They regard this new gen to be weaker compared to the last gen and so this new threat will be a problem for the new gen. And taking that Naruto was desperatly trying to test out ninja barriers with some jonin ninjas from his village, onpy to understand that it won't be powerful enough. It could easily lead to them fixing on technology, something that will be strong enough to handle the new threat or anything that comes by
after their time. As that was the worry of the Kages. With the new tech, even if the new gen has a lack of efficent shinobis or any comparable to the last gen. It'll sort out that gap.
I guess all they need to do is make this tech a bit more cool to see. I mean for now, it's just ideas applied in techs(the gloves that stick to the wall, the chakra saber) maybe a new set of villains using ninja tech(that look awesome) will make it more entertaining. Well atleast that's what the show is leading to, hopefully.