I fixed that for you. Can't wait for the mental gymnastics fiat supporters have to go through to explain how inflation is good for the economy
The economy relies on money circulating around. You need to spend money on stuff which will keep the economic engine going because that money then gets spent on other things and so on.
Now, there are actually 4 events - deflation, zero growth, inflation, and hyper inflaction. All except inflation are bad. Deflation is bad because it encourages savings - why buy a loaf of bread today when tomorrow it's cheaper? Sure you need to eat, but maybe you need to eat a little less so we can stretch what we have a little longer so we can avoid buying what we need the longest.
Zero growth is similar - though at least it means you eat as necessary since it's not going up or down. But there's no incentive to do anything.
Hyperinflation, or really, inflation beyond mild inflation is bad - and that's generally considered more than 2%. Prices are going up so fast that wages can't keep up and you really need to buy now which contributes to more inflation.
Mild inflation is where you generally want to be - usually between half to 2% at most. Here your savings will devalue over time, but not so fast you need to spend it all immediately with none for the future, but also means you want to generate value added products from the economy - gathering raw materials, refining it, processing it, producing products, etc. Each economic step adds value and the economy grows.
Bitcoin's fault is it's deflationary. Spending it is stupid - it's why BTC commerce is a fringe activity. No one's using bitcoin for everyday transactions because it costs more and it's stupid. You're better off collecting bitcoin because it's a fixed quantity and once you run out, that's it. That's why the big whales in BTC aren't doing anything - lots of coins are stored up in cold wallets. Winklevoss twins reportedly own over 20% of available coins. Of course, they have enough assets elsewhere that they're not using BTC at all for day to day living.
The real scam to Bitcoin is simple - it's trivial to start another coin. It's why any exchange has hundreds to thousands of coins they support. You know the big ones, but the rest are all small bit players. You also know Trump coin is in there.
Meanwhile, starting your own fiat currency is a lot harder. It does happen now and again, but very few actually last, almost none span beyond a local town and get very little coverage. But there is the odd alternative currency that does - any Canadian knows about Canadian Tire Money, which in the early days were paper reward coupons but before they stopped issuing physical notes started having real money-like protections because many people began accepting them informally.