I don't believe that. The poor will always have an incentive to work hard to get rich. The poor will always keep the economy running. It would be easier for people to succeed (and more motivating) if they didn't have to compete against the massive capital of incumbents.

A deflationary currency only incentivizes the rich to stop working and stop participating in the markets... Which is fine IMO. They're rich, they don't need to work anymore. The best thing they can do is step aside and let someone else have a chance. Their massive capital, when put to work, would mostly serve to monopolize markets anyway... And it's a net negative for everyone.

There is a false belief that rich people are so essential that the economy would collapse without them... But if you look at history, you would see that educated poor people have repeatedly been able to pull themselves out of poverty... I.e. economic 'miracles' (e.g. Germany after WW2, Japan, South Korea...).

People should get rich and retire. There are always going to be plenty of younger motivated people with fresh perspectives to take their place.