Earlier quoted context omitted.
They don't see the difference in mechanisms. Getting rich through pump and dump vs getting rich through making or doing something people find valuable.
To be fair, it's a little bit harder to see the difference between pump & dump vs getting born rich.
Inheritance makes providing value worth doing past the point of one's own comfort. Many people's work becomes most valuable in their latter years, and so we would want them to keep working and pass on wealth, as opposed to either stopping working or just splashing their money out on nonsense.
The principle of being able to own things and work to one's own good, and the good of those whom one choosing to transfer it to, is the fundamental basis on which we now exist in the most advanced societies the world has ever seen, and the most rapidly advancing societies. It's not perfect, but every authoritarian attempt to make things better by centralising power in the name of fairness has gone terribly.
Pump and dump schemes are just nothing like that.