Why? People are deliberately reducing freedoms we were born into and securing the demise of our future! Why should we lighten up? People are actively trying to destroy lives! It is pure evil and needs to be stopped.
As a remainer I also say 'lighten up'. Pure evil? LOL! It is a political decision that involves tariffs and customs and hindrance to travel. Life may better or worse under Brexit, worse in my opinion, but do calm down dear.