I have some experience with zero to hero programs, outside of diving - did a lot of them myself:
1) Skiinstructor in 1 month: yes you had to be good skier to pass, but there are a LOT of "non ski instructors" out there who are better skiers than I am!
2) MBA in less than 1 year; yes you had to get the grades, but there are a lot "non-MBAs" out there who make more money and have more business savyness!
3) Multiple University degrees in 4 years: see 2) above
4) And many other "certifications", such as a sailboat skipper in one night (7 hrs study at night, then write the test)
My insight: degrees and certification is one thing. It MUST be backed up by experience, otherwise you can not be "good" at whatever the degree is in. You can be merely mediocre, and in most cases just "barely get by".
Trust me the 60 day divemaster certification is based on "short term" memory. You learn as much as you can, write the test, pass and then forget about 80%. These people are not ready to teach - as some posts above highlight. The easiest way is to cover a topic in an afternoon and then write the test on that topic that same night. That way, in 60 days, you successfully write 60 "exams". But if you were to ask someone to write that same test 1 week later, without a refresher .... trouble!
The more meaningful route is to get experience first, then back it up with a degree. That way, everything you learn in classroom has an experienced based context. This is not short term memory, but sustainable learning.
But... it takes more time, so hotshots like myself (at the time) do want to come in first, faster and better, so you cut corners on experience and get the titles as fast as possible
I am thinking about doing a DM, just for fun. But knowing what I know now, I would take the time and not rush things. But that is easy to say, if you are not in a hurry (ie because you need a job or alike)