There are plenty of posts about how dangerous those guided cenote dives are for OW divers on other forums. Are posts about people's recent experiences going to be deleted now? "Hey, I just got back from Mexico and did a great dive in Dos Ojos. Caves are really beautiful to dive in." Did that cross the line yet? If it also said, "I think I'm going to find some caves to explore here," would that part be deleted? Or the whole post? Or should it allow people to say "I'm glad you got to experience the beauty and serenity of cavern diving. There is a lot more of that available once you get the proper training."
There is a difference between what you describe and cave diving.
True Cenote diving in Mexico is done in caverns rather than caves. In dry caves, the only difference between a cavern and a cave is that a cavern has the letters r and n in the name. In wet caves, there is an important difference. Different agencies define it in slightly different terms, but the main point is that in a cavern, there should always be daylight from an exit visible at all times. In most cases, a cavern is the first section of a cave, and a sign will be posted warning divers that going beyond that sign takes them from the cavern portion and into the cave.
Taking a guided cavern tour is very different from diving in a cave on your own. Many of the people who are strongly opposed to diving in caves without proper training will also serve as guides for cavern dives. This policy only relates to cave diving and does not address guided cavern dives at all.