How is this some sort of gotcha?

We have guys like rum dick who say they were lifelong Republicans and moved to the left because of Trump, and everyone on Team Feelings applauded him.

Then it's found that split was a Democrat until Obama's antics pushed her right, and everyone's acting like this is some kind of major gotcha.

When did split ever claim to be a lifelong Republican? People change their politics. It happens. As long as you're honest about what you are now, I have no issue with people changing their views.

The only thing that annoys me is when someone moves to the other side and then continues to identify with their former party, while holding none of the ideology anymore. "Look, I'm a Republican, and I can tell you Trump is ruining this country!"