not quite, hydraulic brakes are massively superior its a quantify-able improvement.
SS are simply for weirdos or people from Norfolk. gears are simply common sense.
29ers belong on canal paths and beneath failed roadies that jump of and run down muddy hills.
650b. . .never tried them but i really can’t see the very very small increase in diameter making that much difference.
@mrmoofo trek did the 69er thing ages ago without all the marketing hullabaloo and they bombed big time, move on a few years add a few million in advertising and suddenly their the second coming . . .