I have also noticed is a kind of ironic use of "it turns out" for presenting personal experiences as being significant discoveries in the world at large.

"To the disappointment of my Asian parents, it turned out I hadn't shipped with the firmware needed to support violin playing."

If that turns out to be recent trend in rhetoric, that is mildly surprising.

When people make ironic uses of some rhetorical device, it inevitably happens that a number of people don't get the humor and start using it unironically, like that's the correct, casual thing to use for that situation.