Actually, I disagree.
Perhaps only about 10% of them total care about the hardware sales advantage. Or whatever the proportion of internet zealots there are among that 8M. It may be only 1%. Who knows.
But hey, I know you take these fanboy wars seriously so I'm not surprised at your blanket claims.
Actually most of them care, that's why people switched to the PS4 from previous 360 owners. They wanted the better version of multiplatform games for current gen. Last time I checked, in general, multiplatform games continue to sell better on the PS4.