Dude ns10's are still one of the top studio monitors, if they are powered with a correct amp.
Live is very much different to studio work.
Yes i work in audio, and we have quite a succesful company in live & studio work. Birds can confirm this.
We use ns10m and im pretty sure if out mixes came out shit we wouldnt be where we are.
Anyone who says ns10m are outdated and shit, cannot mix for shit. And thats why they believe they sound like shit