Personally, I am a bit conflicted about all of this.
On the one hand, I would welcome sober, reasoned discussions about all subjects on this forum because I respect the views of people here who seem to know more than I do about a lot of things. I could read the Economist or the WSJ for opinions about Brexit or many other topics, but in some virtual way, I feel I know some of the members here pretty well and would enjoy learning how they feel about certain topics.
On the other hand, I have seen too many times how some threads veer into politics and then all manner of behavior changes, people's personalities switch, and all heck breaks loose. It is unpleasant, and can become quite nasty and revealing of character. It is clear that left unchecked, the discussions can unravel pretty quickly.