I am an American so I hesitate to say anything about Brexit no matter how stupid it seems... um never mind about that. But I must ask a question that has repeatedly come to my mind. If a large part of the motivation for Brexit came from a desire of many in the UK to be independent of decisions and control by the EU, doesn't Brexit actually give the EU "the whip hand" right now? It appears to me that Brexit will soon provide to the EU the power to strangle the UK's imports and exports, to cripple its health services, to create food shortages, to mire travel to and from it, to restrict financial market access, etc. Based on spite or logic, can't the EU severely damage the UK economy simply if they decide to do so? Has Brexit provided to the EU the ability to accomplish what the U-boats in WWII could not: the effective isolation of the UK from its critical suppliers and markets?
Sure, one might argue that the EU "needs" the UK and so would never do anything so drastic. But I am less and less certain that the UK does not need the EU much more than the reverse. And countries are capable of making irrational decisions for emotional reasons; the EU already appears poised to "teach the UK a lesson" in response to Brexit that may be based more on anger than a logical assessment of what would be the bet policy for all.
Has Brexit handed the EU the power to arbitrarily punish and control the UK over the next few months to a substantial extent?