I don't even ask people not to Limit Break in Secure anymore because I swear there's always this one guy in every party that does it just for spite. I'm not even exaggerating, there was this one time I spammed something along the lines of:
"Limit Break is not individual. Please save it for the Node" 5-6 times before then apologising and explaining that I was merely playing it safe because there always seems to be one person that insists on wasting it. What happens shortly before the node spawns? The one tank guarding the OP uses his Break to try and keep himself alive for a second or two longer(apparently) while only left with a sliver of health left - in a 1v1 situation. Granted that particular example was a long while ago, but it still happens in almost every Secure match to this day.

Not surprisingly, every single person that has ever done this is also one of those mutes that never says a word all match. I'd forgive anyone that apologised in a heartbeat, but they are all the same.