The lay of the land here is pretty much understood and yet abused. There are threads that just beg for debate and anyone’s free to join in the food fight. It’s not about "owning the bandwidth." It’s about someone highjacking your thread and eventually taking it off on a not appreciated tangent, robbing the OP of his/her answer.
Then, there are threads that avoid that route and when unsolicited points of view interject and the usual dog pilers start to chime in, it’s A-Okay with me that when the OP asks for it to stop, then grow up and stop. There will be other chances to display your id for the world to see.
This has been going on for too long a time. Those who complain about civility beg the question: what little world do you reside in?
All the best,
Nonoise