They don't know the answer to it though. I commented on one of the statuses asking him to explain it, and he couldn't. He said "it depends on what the lighting is in the room you're viewing it", so I said "well, I showed it to my mom on my phone while we were in the same room, and asked her what colour it was. She said blue, and I see white. We're in the same room, under the same lighting, seeing the photo on the same screen. Why does this happen?" and he didn't reply.
I think it's just yet another thing people love being contrarian over. Happens every time something suddenly gains a lot of interest or popularity, some people feel the need to loudly declare how not into it they are. They're unique, don't follow the sheep herd, make up their own mind, have their own thoughts. Unlike everyone else on the planet and "oh god where is humanity headed, thank goodness for me!" It's getting tiring.