I would suggest that a large percentage of that 52% voted based on "control the borders" rhetoric. That (AFAIK) cannot be delivered while remaining in the sing

I would suggest that a large percentage of that 52% voted based on "control the borders" rhetoric. That (AFAIK) cannot be delivered while remaining in the single market, so the UK government is taking the only possible path to satisfy that requirement which was voted for by the UK population in a referendum... Now I'd agree that if you actually spelled out the reality of "hard brexit" people might be given pause and really they should have listened to "project fear" as it was dubbed by the brexit crew, but the fact remains that the brexit campaign was on border control and to deliver this the UK has to leave the single market