Not obviously, since you listed it third of four and fourth was roughly "swim where they can't grab you, and drag them back to shore while avoiding their grasp", which sounds pretty straightforward to an untrained reader.
To give an example of what can go wrong, your description suggests that you just hold the person where they can't reach you and drag them. But if you try that you'll find out the hard way that there is no good way to drag the person while they are still panicking without getting grabbed.
To give another problem, can you swim in place for a minute with your hands out of the water? Try it before confidently asserting that you can. And that is substantially easier than swimming in place, holding a struggling, panicked person up.
Those are among the reasons why I've so strongly recommended that untrained people avoid option #4. If you can stand on the bottom, fine. Otherwise, not so fine.
Another important thing that they brought up in my training: the first thing to check for before going in to save someone (land or sea) is if the conditions are safe. As far as I know, every trained rescuer is told to put their own safety above the person or people they are trying to save. While I don't fault anyone that sacrifices themselves to save others, it doesn't make sense to add another death to what is already a tragedy.
The lone shark starts at one end of a 25 meter pool, all the minnows at the other. The coach blows the whistle and all the minnows have to try to reach the other end without getting caught at the surface. Any minnows caught at the surface immediately become sharks. Repeat until there are no minnows.
I wasn't the fastest swimmer, but I could easily hold my breath from one end of the pool to the other, including wrestling underwater with sharks. If Sharks and Minnows were an Olympic sport I would have been competitive. Of course, that was when I was twelve ;-) At this point, I think I'd carefully consider how to approach an obviously drowning person.
My strategy was to breast-stroke as fast as I could while not quite scraping the bottom of the pool with my chest.
I usually came out pretty well in the end :)
We would also do exercises in the diving pool of treading water for a half hour+ at a time. Good times.
(I was also around 12)
Example scenario (based on a real life occurrence, as related by my instructor): You approach an indoor pool, and see what looks to be a child floating face down in the water, and an adult also floating similarly nearby. Your first instinct might be to dive in to save one or both of them, but a subtle clue is present: while the child is in swimming attire, the adult is in street clothes. In actual fact, a live wire has somehow come to be in contact with the water -- the adult had dived in to try to save the child, but was electrocuted.
Absolutely.
NOLS and the Sierra Club tell you the same thing, as well -- if you lead a hike for the Sierra Club and someone gets hurt, the FIRST thing you do is make sure the situation is safe. It doesn't do anyone any good if someone gets hurt and you get yourself hurt trying to get to them -- because now there are TWO victims.
Or more specifically, watch yourself before deciding not to mention it because it's "obvious".
As for you understanding the risks of #4 when explained, if you had understand it when it was first explained you shouldn't have responded as you did. Go back and re-read my original post. I said not once, but twice, that this was for trained people only. I further gave as two reasons the inability of untrained people to properly support a struggling person in the water, and the speed with which a mistake gets you killed. Yet your reaction was that #4 didn't look so bad.
I described #4 in the amount of detail I did because I thought people would be curious about it. But if people are going to misread my attempt to satisfy curiosity as a howto, it would have been much better for me to say no more than that going after a person drowning in water over your head is a recipe for suicide unless you have specialized training.
Precisely why 3 was before 4. 4 is only an option if you know you're capable of it, and know why. If you think you are, you're wrong.
Unskilled and unaware of it. Deadly unk-unks.
Don't underestimate a drowning swimmers ability to grab and hold you under the water - they are fighting for their life. It sounds ridiculous, but I have seen a small child do so to a large adult many times.