I'm sorry but the UK is the entity we're talking about, not actual persons - individuals can't join or leave the EU on their own hence it's the actions of the actual formal nation state that get judged when it comes to joining or leaving the EU.
Consider the possibility that it's your nationalist feelings (and given the huge role of British Nationalism in Brexit that's not actually a good thing) that are making you confuse the country and the actions of it by the hand of it's elective representatives, with you yourself and people like you - the actions of the nation never really represent all people in that nation and it's not really healthy (IMHO) to identify yourself with The Nation.
People being critical of a country seldom means they're critical of everybody in that country, unless they're nationalist far-right morons, in which case their problem is a lot bigger than merely talking in an acerbic way about a nation.