Taking a longer time to graduate to become the “world expert” in their field is fine if grad students weren’t paid next to nothing for the 60+ hours a week that they are expected to work. As it is now it’s better to finish as quickly as possible so they can have a real life.

Most applicants know that that outcome is antithetical to pursuing a PhD. It's common knowledge that a PhD involves roughly 7 years of academic work (read: low pay) in pursuit of becoming an expert in a specialized topic. You don't enter a PhD program expecting to immediately make money or to graduate as soon as possible. It's not a coding bootcamp.

Isn’t this sort of how all terminal degrees work? MDs, JDs, etc are all putting the candidates through the wringer, for relatively low wages, until they’re “experienced”. I’m not saying it’s right, but it’s common knowledge it’s the way things work if you want to have those magic letters of a terminal degree next to your name in your email signature.

Don’t want to deal with the machinations required? Opt for the masters track or just get an Undergraduate degree and spend 20y working your way up.