This "love it or leave it" garbage is not new. Fifty years ago people were pointing out how stupid it is. Here's proof.
From the July 21, 1969 Chicago Tribune: On the op-ed page, Sydney J. Harris wrote a piece headlined, “The ‘love it or leave it’ nonsense.”
“One of the most ignorant and hateful statements that a person can make to another is, ‘If you don’t like it here, why don’t you leave?’” Harris wrote. “Most people who want to change conditions do like it here: they love it here. They love it so much they cannot stand to see it suffer from its imperfections, and want it to live up to its ideals. It is the people who placidly accept the corruptions and perversions and inequities in our society who do not love America.”
From the Chicago Tribune.