There is a "General Chat" section for a reason... to have a place where non-electronics stuff can happen. If you never ever wanted to have your sensitive eyes see anything non-electronics related, then don't click on "General Chat". It's really that simple. If people start making "Does god exist???" threads in the "Metrology" section THEN you have a problem. Until then everyone needs to calm down. No one makes you click every link that exists on the internet. Why make this a special case?
This whole discussion is silly. People who have an interest in electronics also have opinions on other things besides electronics and like to discuss that. That's not interfering with discussions about electronics in any way.
And lets not forget.... Forum posts and page views of ANY KIND get Dave more money..... If an EEVBlog Brexit thread shows up as the #1 google hit for Brexit that would be a HUGE revenue boost. This isn't just a place for us to waste time, this is a business that needs to feed 4 people now.
The problem is that it is well known and understood, what happens, when you have/allow
political threads, which are
not to be confused with general off-topic threads.
Unfortunately what sometimes happens with political threads, is that big, overheated arguments can take place. Potentially leading to personal attacks and trouble, sooner or later, within the forum.
Also stuff which can be written, can be a big annoyance to some members of society. Where a person expresses views which attacks others because of their life interests, or where they were born, etc etc. Again, this is rather problematic.
Therefore a serous moderation capability would be needed. Both in time coverage and resources. This forum (apparently) does not have anything like that sort of capability, and does not seem to want to go down that route. Which is their decision, and fine if that is what they want.
So I (sadly, because some political threads are fun and educationally interesting) have to fully support Dave's "locking" the Brexit thread, and his view on political threads.
If you especially want political thread able forums, there are a number of them available, and they are usually very large forums, with a sizable admins and moderation team. Potentially giving approximately 24 hour moderation coverage.