For aldo holding the fence, its just human reaction to do that, if he kept doing it then yes he should have lost points.
and i just re watched the rumble vs vitor fight, the first time i watched it i felt like all the stand ups were very fast, but 2nd time watching they were stood up twice and separated on the fence once.
the 1st take down they were down for 1min, and when they were stood up there wasnt any shots landed by rumble for over 20 seconds. and vitor had locked both of his arms up at the time of them being stood up.
on the fence rumble wasnt really trying to advance his take down.
and the 2nd time they were stood up was fast, but again vitor had total control of 1 arm, and almost control on the other.
so although they were fast in comparison to some fights, some fights are so dull due to one guy being an awesome wrestler but then not trying to advance his position and finish, all they aim to do is hold them down and throw a punch every 15secs so they dont get stood up. but never go for subs or advance there position.
that anoys me a lot more compared to some fast stand ups, when the guy on the bottom has control of the one on tops body/posture.