You need to start thinking about the economy in terms of goods and services instead of money. Hoarded money is dead money, it's actually anti inflationary. If there are 100 apples and everyone can afford 1 apple except for a rich person who can buy it all, it's actually a good thing that the rich person doesnt spend their money to buy the apples, thus driving up the price and depleting supply.
You are conflating macro- and micro- economics a bit in that statement. Entities accumulating wealth incrementing towards infinity contributes to inflation, e.g. My family can spend 1 trillion to out-bid my competitor for ownership of a villa worth 1 billion for bragging rights.
Commodity pricing may contribute to inflation over time. But commodity prices go down, whereas currency tends to move in one direction until the civilization backing it collapses, or the specie changes.
I'm more talking about how hoarded money has no effect until its spent, at which point the consumption tax kicks in. I.e. it's not really a regressive tax because you are taxed based on how you live, not how you can live.
You're assuming all economic activity is good activity. Billionaire spend allocates capital to frivolous garbage that does not improve human experience.
