Its still an mostly American phenomen. I've met plenty of people in my career who didnt learn CS and changed in the field later, mostly trough self education and interest.

In Switzerland if you make a second degree it's usually shortened and better payed. Plus often sub-financed by the state. I made my programming degree with people between 19 and 50.

Never did I meet anyone proclaiming doing a private certificate bootcamp thingy.