Yeah but you're missing the point entirely, the DK1 was a terrible, terrible device, and just intended as an early prototype, the DK2 had a significantly better screen but was still fairly poor, only the final commercial release got things right by increasing the resolution even further.
The switch has a resolution BELOW the first ever rift prototype, which, as I can say from owning one, is an experience that I am frankly surprised didn't put people off of VR for good, it was THAT bad.
And the other thing is, headsets like Rift, vive and PSVR have the display in a sealed unit, no dust or crap gets on the screens which ruins the immersion, a switch screen would already be fairly poor because of the resolution, add to that smudges and fingerprints on the display itself and it gets worse.
It was a terrible, terrible device that still managed to blow so many people away so much that it literally kickstarted the VR arms race we're seeing now. I'm not missing the point - you are. It doesn't matter how terrible you think it was. With no games and a $350+ price tag, it was good enough. Switch VR with better games at a $100 price tag will be much better off than that.
As for smudges and dust. Okay. The HMD comes with a wipe. Crisis averted. You know what the best selling VR headset is? Not Oculus. Not Vive. Not even PSVR. Gear VR. Worse games AND succeptible to dust and finger prints. No one cares.
VR just needs to be cheap, convenient, and have a steady stream compelling software to be good enough to go mainstream. Switch is the first device that can actually make all of that happen at once, 720p screen and all.
Well, this is new.