No, it's not. Nothing irreversible has happened yet. People have been saying this since Dubya. I was there when people threatened to leave with every election, saying they would move to Canada because the country was done for, and it got so old so fast.

Consider that the only thing you're doing is completing a self-fulfilling prophecy if you don't resist.

And honestly, I wouldn't be surprised if some Russian social engineering campaign is encouraging people to follow this trend by repeating it on social media. Do not give in.