40 years ago, I took a resort course in Hawai'i and would have gotten certified on the trip had I not then fought the surf (and the surf won).
Years later, My wife and I vacationed in Cozumel, and I took another resort course there. I loved it. When we decided to return to the island on another trip the following year, I decided I would get certified because I can't stand lying around on a beach. I did that on a trip to Puerto Vallarta. It was a simple, 3-day course that I later learned achieved that short schedule by skipping a large percentage of the requirements. It would be hard to find a certified diver who had less training than I had.
I decided that I would start the Cozumel adventure with more training, so I started with two days of AOW certification. I was the only student. The instructor did a good job of teaching me the skills I needed to be basically competent. I then did my first non-instructional dive, with a whopping 9 dives in my logbook.
That dive was transformative, and I decided that scuba was not going to be something I did for a day or two while on a semi-annual tropical vacation. My wife loved tropical vacations, and she loved to snorkel, and so even though she did not want to dive, she was happy to plan our vacations to diving meccas, and in the next few years, we visited different Caribbean isles, Australia, Fiji, and Florida. I was a dedicated tropical vacation, one trip a year, OW diver.
Then I did early retirement, and I decided that maybe I could do something with scuba during that time. I got my rescue certification and then went the professional route. In the decades that followed, one thing led to another, and I eventually became a trimix instructor and a cave diver with dive experiences all over the world.
None of those decades of dedicated diving would have happened if I had been forced to take a seriously long, complicated, and challenging OW certification course. I was looking for the cheapest and easiest way to get under water on a coming vacation. If it had been much harder than that to get certified, it never would have happened.