Americans only shitpost about Europe to distract them from their own hell
The state of Europe is not, nor will it ever be anywhere as bad as America
Europe's transformation is still in its infancy and can/should be reversed. Also, Europe is not made up of "nations of immigrants" so its more baffling that they're becoming multiracial.
While the US/Brazil/Australia are made up of immigrants and ex-slaves to begin with. The "enrichment" already happened and finished 400-200 years ago. It's over, done and not changeable, while Europe still has a choice
In the year 2014 the United States averaged 700 abductions per day, 8000 home invasions per day and 40 murders per day. And those are just the crimes that were actually reported. In America, during peace time, a violent crime occurs every 25.3 seconds.