-snip-
Saying high income maker can't save is a bullshit, those people are choosing their own lifestyle and the way they live. If you find such people, better to calm down and never discuss about money management because they will never want to learn it, except something big happened them.
Different people different character, one is over saver and one is over spender, it's not something we need to discuss because they're happy with their own choice.
Imagine if one of those two people was a member of your family - what would you do if you had to give him advice?
Meddling in other people's affairs is inherently bad - but if it's an important part of your life, maybe you should give them some good advice. It's best to keep quiet about things that don't concern you - but advising him is an option if you're the one being listened to.
Everyone also knows that they have their own choices in managing their finances - that's their responsibility, of course. But try to make a good approach if he is a member of your family or a friend - maybe it will change his pattern and lifestyle to think not only for now.