I used to post on MN before the referendum and I saw very little discussion about Brexit in AIBU (although I think a lot of threads started in AIBU were moved to the EU Referendum topic).
In the EU Referendum topic traffic was fairly slow and there were just a few posters battling it out time and time again. A few posters on the leave side were, in my view, 99% likely to be paid trolls, who all disappeared immediately after the referendum.
Since the referendum the subject really seems to have picked up steam and there seem to be loads of people getting really worked up about how Brexit is a disaster and the country is going to the dogs.
AIBU to wonder where all these people were before, and why they weren’t all shouting from the rooftops when there was still a chance to change the result?