Disclosure: I had a OnePlus One (although sold it for an LG G3), and now have a Two.
I find this review quite bizarre. You pan it for having the new USB type C, no quickcharge and no NFC (which incidentally I used a handful of times when I got the One but then quickly forgot about), but give very little praise for the price or hardware - like dual sim and fingerprint sensor (which for me has worked flawlessly and just as quick & reliable as my wife's iPhone 6).
You say dual SIM isn't a USP, yet whilst I agree it's not exactly unique to all phones, it is in flagship devices.
In all honesty, yes this phone suited my needs specifically of having two sim cards (one for work and one for personal) while having the all important fingerprint sensor to bypass the ridiculous passwords that the works email software insisted on. I could literally not find another flagship device that had these two features.
Finally, people need to get over the invite system. Yes it's a pain in the ass, but I didn't register even close to first (as I didn't even realise it had been released for about a fortnight!) and I got an invite fairly soon after, placed my order, and the phone was in my hand within 10 working days - not bad!
In all I'm disappointed to read a review that so heavily focuses on the negatives and hides the positives, but I suppose that's just my opinion.