It’s true all over Europe, and to a lesser extent in the U.S.. People have commitment issues, and no-fault divorce makes marriage an insane liability should a divorce happen. I say all over Europe because my Grandmother noted to me how common it is in Austria, and I have noted its’ commonality in Spain. Then in thw U.S., well half of my graduating high school class had at least a kid ten years later, but only a fraction of those with at least a kid actually were married.
It’s pretty bad, as you point out. Most illegit children grow up dependent on the welfare state and don’t normally become Phds. and hardworking entrepreneurs.
Out of wedlock births are the death of civilization.