As this thread is in the basic forum, I presume that you are a relatively new diver, and based on your location in Colombia, have not experienced any dives with Emerald Charters or other operators in close proximity to Jupiter, Florida yet.
I don’t know if there is any operation in the continental USA that has spent more total diver hours diving with sharks, but please understand that Emerald has been running shark dives for well over a decade. I’ve been an occasional patron have had the chance to dive with, and photograph at very close range many species including Tiger, Lemon, Caribbean Reef, Blacktip, Dusky, Sand Bar, Silky, Nurse, Bull, Scalloped Hammerhead, and Great Hammerhead sharks when using Emerald. Their protocols may “sound extreme” to you, but they are actually quite prudent, logical, and effective. I know of several other dive operations that enforce similar parameters for shark dives.