That's exactly why; its change in animation, style, and genres is what made many people dislike this new adaptation. They say it's more faithful to the manga, I don't know, I haven't read it. But from what I can see, don't expect much drama or suspense from this anime, as it's very different from the classic films in this franchise.
Obviously, nothing modern can surpass something as classic as GITS from the 90s. Or well, unless Madhouse were in charge of this adaptation, it would be something very different. But anyway, as you say, it's too early to talk more about this new series.
I actually went to check out the manga, this is a few pages in brazilian portuguese, you can see how similar they look to the anime.
