isnt that audio chipset crap? I mean a huge pile style?
It's fine for what it's there to do. Remember, this isn't supposed to replace your desktop or even your laptop. They are more for public access computers in libraries and universities where the average user will only log on for a few minutes to print something off or check what books they need. AV capabilities are there because some people are going to want to sit and work and even relax a bit too but that's just not a priority especially since almost every machine that even uses the sound chip will be used with cheap crappy headphones. Also, almost no normal people could even recognize the difference between good and bad in this area, let alone appreciate the improved cost.
Like anything, these devices are for specific use cases. They're still interesting as devices, but don't judge them by the same standards as other machines. Of course they could use a better sound chip but that would push the price up and make NUCs less accessible and few if any customers would ever appreciate it.