This list has been circulating forever, following the publication of the book, and I believe they should be called "top five very theoretical and after the fact and with no empirical evidence they are regrets and they would do something different if in the same position of the dying".
Now, think of those who like to eat until they are full, those 7k calorie meals. There are many such cases, especially in the United States. After such a large meal, which would frighten weaker stomachs, if they were asked, "Do you regret eating like that?" they would almost certainly say yes. But they would do it again tomorrow, some would say because they have a medical condition, others because they love to eat and don't mind having problems with walking, diabetes, and all the assorted ailments that go hand in hand with overeating, or alcohol, or any combination of the two.
In a moment of tremendous weakness, of fear of crossing the Acheron, when asked "do you regret working so hard?" even the laziest worker the world has ever seen, the anti-Stakanov, would say, "yes, I do, it's one of my biggest regrets."
Some of my friends did not continue studying after middle school and sometimes say, "I would have/should have continued studying," regardless of the fact that at that time they were not inclined to open a textbook even with a gun pointed at their head. But in their minds, if they had a chance to go back in time and armed with motivation that they did not have at the time, they would study, of course they would.
But they only like the idea, not the action. They are the same people. And it's the same for those five regrets, the "if I had $10 million, I would give $9.5 million to charity." But they don't have that $10 million.