Printing money to redistribute wealth
The main problem is that wealth does not equal cash. Those ten rich people probably have most of their wealth in real estate and stocks. Imagine all you own is a Lamborghini, then the government prints a lot of money, does that impact you?

Depending on the situation the money printing may be progressive or regressive. And the cost are high: There will not just be one inflationary moment, there will be inflation because the initial inflation breeds an expectation of even more inflation leading to hyperinflation.

Finally when you've done this once, nobody will ever want to hold your currency again because they distrust you. Leading to a number of other problems.