Googling it shows up a lot of positive reviews, not negative. I'm not sure where you are reading the bad things, got some links so I can see out of interest?
If you are talking about a few scratch and crash videos, well all I can say is I've not had a single problem with any of that, I have had the left joycon de-sync once, but the game paused and you just click a button again to continue. I can see how the scratch screen does happen though, if you aren't careful, as it surprised me that the inside of the dock is plastic and not rubber or something. However I've used it a lot and my kids have too, and so far so good.
I don't care about defending it as such, people can do what they want with their money, I'm just talking from experience. It's an excellent device, a few niggles sure (what launch machine doesn't have that?) and I do think it's a bit over priced, well for the dock quality anyway, but the machine itself is fantastically made, powerful and I've had no sign of trouble.
Also it's brilliant in portable mode, again, I've no idea why people would say it's not at least decent? All I've seen is a few half arsed comments about battery, is there something I'm missing?
Overall, if you are on the fence then I'd say wait a few months and see what the gaming situation is like. Of course, if you have the cash spare and no Wii-U, Zelda is worth the inital purchase alone, it really is, but it needs backing up long term obviously. Any specific questions to help you decide let me know and I'll answer them honestly. Again, game situation is the only sticking point for me, but that will come with time. I'm honestly more concerned with games not coming for the Psvr than this, especially since it's taking over from the 3ds too.