Seriously?
Politics has always been in entertainment.
Never read or seen a book, poem, play, film, song or comedy involving politics? Of course you have.
Don't like it, don't watch, that's fine, but moaning that politics has no place in entertainment is just ridiculous.
I don't watch BGT but just watched Diversity's performance because of this thread. It was very good.
Hamilton is one of the best musicals I have ever seen, and that has had a lot of political impact.
Don;t like ti won;t watch, but what is the point in mopning about it?