Most cave diving is NOTHING like that. You are reading about a trip to Everest and saying you could never take a walk in the park.
That's a good comparison, I like it.
130m deep and water temperatures close to freezing put this dive at the extreme end. I would much rather dive those conditions in a cave (predictable, no wildlife, no winds, waves or tides) than in the ocean. Cave diving allows for deco habitats, staging of spare gear and (in my experience) usually less pressure to get in the water at an exact time.
It's an interesting case because not getting the bodies out would have delayed large payments from a national insurance scheme to one of the widows for many years. It's hard to argue that they should have been left there. It also highlights that when expedition-level cave divers get themselves killed, the best placed people to do the recovery are often their friends. The authorities don't have the skill level to do it, and often don't have enough knowledge to determine how skilled the divers volunteering actually are.
Try to stay alive, everyone. Underwater body recoveries are no fun at all.