And this is different than now how? You're under the assumption that what you said is something that isn't happening now. I already said the rich hold assets. Changing what is an asset doesn't actually change anything.
However, a poor man, being frugal, can become rich over time. A worker earns his wage and doesn't lose value before he is even been paid.
Here, I'll show you: A worker works for an hour, and earns a bit coin. The person paying him owes him a bit coin. If the currency is deflationary, the longer the payer holds that coin, the worse it is for the payer. He owes that coin no matter what its purchasing power is. Today, one bitcoin can buy a shopping cart full of food. Tomorrow, the shopping cart and something else (a candy bar).
With Inflationary money, a worker can work for $500, which can buy a shopping cart of food. If the payer holds that currency, the worker waits and when he gets it, he can buy a shopping cart of food, minus a candy bar.
Guess which is better for which person. I work for a salary. I haven't had a raise in 7 years. Guess what happens in the inflationary currency? If I work for deflationary currency, guess what happens (hint, it is the opposite).
There are other issues with deflationary currency. However, those that work hard, work extra, save currency are rewarded in deflationary currency market, and punished in inflationary currency.