Judoka clearly have a different approach to submission than BJJ competitors. I'm watching CBC coverage and a Portuguese girl had an armbar on a French competitor. She was hipping in hard for a good 2-3 seconds after her opponent started tapping, during which she clearly injured the arm. Seems like a significant lack of respect/restraint.
Edit: Are you guys watching preliminary matches? Where? US NBC and Canadian CBC both seem to only broadcast the semis and up.
For the most part, judoka resist the submission way more aggressively than BJJ guys do, and the refs don't accept taps they don't see very clearly. This means you got to hit your opponent super hard with the submission and not really give a fuck about it.
It's actually an annoying part of judo newaza ... in my experience, BJJ guys will know when they are caught and tap earlier, whereas with judoka you really have to hammer the sub home to get the tap.
I think part of the reason for this is that in judo newaza rules, the ref will stop the newaza and save the competitor with a restart if the sub attempt drags on. Toughing it out is critical, while in BJJ, nobody is going to save you and restart things. You are stuck with no hope of rescue by ref, and toughing subs out is much less useful.
You see some of the conflict with how people feel about the Camarillos, who hit the armbar so hard they jack up the arm, giving no chance to tap. In competitive judo, that's how it's done. In BJJ, you are considered an asshole if you hit the arm that hard and fast. This is because voluntary tapping plays a much bigger role in BJJ.