There is a fixed amount of Bitcoin.

That is part of the problem. As long as the economy grows, then Bitcoin is deflationary. This encourages people who have it to hoard it, rather than to move it around and drive the economy. It is almost perfectly designed to be used as a speculative investment rather than an actual day-to-day currency.

Having a fixed pool of money to represent your economy only makes sense if the total value of the economy will never change. This doesn't happen in the real world. Populations grow, new technologies add value, and poverty generally goes down. This is all fairly simple math.

It’s backed by math.

No, it's backed by the power grid. Shut off the power, and you have nothing.

Also trying to create scarcity in a realm where none actually exists shows how greedy and scammy it is.

It's worse than any other fiat currency. There's literally nothing behind it.

Ah, I see, you think that because you can mint Schmecklebux or whatever and use it as a medium of exchange, you're somehow exempt from the laws of whatever country you're in when the trade goes down? Tell me, does your flag have a fringe on it?

digital scarcity

ipv4 addresses. Also bitcoin is the worst example here, as it's just an asset. It's not bearable as real money, you can't trust its always changing value. It's also a victim of constant market manipulation. XMR on the other hand is a relatively stable currency.
Bitcoin is also a privacy and ecological nightmare.
In general it's also really fun that you can lose all your money without doing anything wrong.

I think crypto could have its place as the cash of the internet. No one can watch your transaction, but if the other person takes your money and runs you are shit outta luck. No way to revert transactions, perfect for money laundering, but also anonymous, which can be a plus.

But all this makes it completely unsuitable in everyday use.

Also: yes, there is a fixed amount of Bitcoin. But you know what governments all over the world did when Inflation was sky high? Change the interest rates to change the amount of money that goes into the economy to make everyday items affordable again.

And for Bitcoin in particular, if everyone actually uses it as intended the artificial limit of the transaction rate would only allow you to perform one transaction every two yearsor something like that.