They are not alike at all. Just because the writer wants Britain in the EU doesn't mean the British people's choice to leave it, and Boris Johnson's desire to honour the result, makes them unwise. In fact, Cohen comes off as tissue-thin. I thought the NYT was a serious paper.
For many British people, the EU is a complacent bureaucracy sucking the sovereignty from its members, and setting up tariff barriers to protect the fat countries of Europe from global competition.
There may be costs to leaving, but our cuisine comes not from Europe but from the rest of the world, particularly places like India and Hong Kong.
Aside from which, Johnson is a well read person, who happens to have unruly blonde hair. Trump has never read a book and his hair is carefully combed and red, if anything.
They share a conservative desire to lower taxes. That can be benign and it can be damaging depending on the pre-existing tax rates. For myself, I am concerned by things like encouraging innovation, protecting the vulnerable and also tax rates, so I support whatever works rather than favouring any grand preferences of political theory.
Johnson wasn't my pick, but he is a darned sight more sane and less vain than Trump.
http://www.nytimes.com/2019/07/05/opinion/boris-johnson-donald-trump.html?smid=nytcore-ios-share