I think it's just hard for the older audience that grew up with Naruto to see the shinobi era be threatened with technology. I mean.. In all of Naruto it was clear that not everyone could become a ninja, and those that did, had to work hard to prove themselves worthy of the title. With technology, literally anyone can become a ninja. It makes most training obsolete in a sense. There's no effort. No need for any kind of nindo. It just feels wrong to a lot of the audience.
However, Boruto is a different story. We were told this by Boruto himself in the very beginning. It just shares the same universe with the story we started with. That universe has evolved since Naruto's era.. and will continue to do so. Once everything is destroyed in that timeskip we saw.. it will propel everything even further. The new age will be about humanity, not just those labeled as shinobi. It will focus on technology and education in general. Konoha will look vastly different once it's rebuilt. Only monuments, memorials, and museums will be left as a reminder of the shinobi era as to not lose it completely. A new police force will be made for those who still want to retain some form of shinobi way. The system of the shinobi world is still going to be its downfall.. and will be replaced by something close to democracy. Sarada will be the leader as she wants to be. Shikadai will be her vice president/advisor. Boruto and Mitsuki will work together to make sure the remainder of the Otsutsuki.. or any other clans (aliens) won't destroy Earth. I'm sure they will also make sure any real threat on Earth itself is taken care of as well. Everyone else will end up in the police force or scattered doing other jobs.
^^ This is what I see coming for the Boruto storyline. All thanks to the technology we are seeing right now. I know it sucks to see the shinobi era we grew up with possibly fall out of favor.. but it's just how this universe has progressed. From ancient traditional ways of the shinobi, to the future of humanity in general. The legend of Naruto and Shinobi will finally be complete by the end of Boruto.. which will be the end of the whole franchise

I think it's a decent way to end the whole series.