Comparing going to uni vs. paying for an endorsement is a tad far fetched. Wannabe doctors don’t go for job interviews at a hospital and if successful, go and fork out 30 grand to enrol at uni. Doctors sure as hell don’t hand over 30 grand to become specialists. They actually get paid while they are training. A much better analogy would be comparing uni to flying school.
The “making yourself more employable” argument only really sits if you are paying for these endorsements before you apply for a particular job…