yes, but the point was/is that on-screen buttons sucks and the bezel is still there. So if it is there, why not make some use of it? Ofcourse, when you have something like motog 2014 or htc one (m7, m8, m9) with speaker grill on the bottom then you can't place the buttons all the way down. But still, M7 solution is better than M8

On M7 that bezel is used for something unlike on M8.
or this one

it seems to me that s5 has smaller bezel and yet, it still have buttons that make it useful unlike that black nothing on nexus 5
well, then you are lucky because trending, no matter how dumb it is, goes your way.