agreed. i run 1x9 for the same reason (front mech hate) as well as where my main trial rides are the climbs are mostly short and not too steep. momentum goes a long way for most of the short ups and i don't mind pushing a little bit every now and then.probably less than 3 or 4 %...that guy is a freakin animal...why even make the comparison....i don't think that many people are so delusional that they think they're drivetrain setup symbolizes whether or not they can hang with weir....
i run 1x9 because i absolutely abhor front derailleurs, and it challenges me to push a little harder, and keeps my bike setup cleaner and simpler....that's all
i might switch to 1X10 to get the 36T rear so i can get through some of the more technical climbs here and there, but all in all i'm pretty content, and i could give a sh:t about looking like mark weir
also looking at 1x10 for the same reason.