But current always takes the path of least resistance

To be more precise, current always takes ALL available paths, not just the one of least resistance. It takes each path in inverse proportion to the path's resistance.

You can be killed by a fraction of an amp going through you. If, during your shock, hundreds of amps happen to be going around you via a path of less resistance, that fact won't be of much help.

If every conductor you're touching is at very close to the same potential, THAT fact will let you avoid shock, of course. And that's what we're seeing in these photos. Still, it's lunacy to put mains power in a swimming pool with people.