Yep, from the point of stability that sucks obviously; there are stablecoins though. I still like BTC as a speculator (and I know it's almost nothing more than gambling, but considering coin tossing, dart throwing or monkeys outperform professional stock investors/fund managers (at least there are a ton of articles saying that), it all sounds like gambling), I create a nice living wage doing nothing at all but clicking buy/sell a few times a year. And that is only running on profits (so all money I 'invest' is profits made with btc alone) from when I bought a stack of btc end of 2016 because something seemed to be happening and by golly it was. As long as it works, it works.

Good or bad; whatever works... It's a nice extra on top of my day job.

that’s at least all in the same order of magnitude! only a couple years ago it was swinging much more wildly than that

But it has nothing on the established fiat currencies, where a >10% change in a year is (rightly) considered a major event

Consider USD/EUR. In 2015 it was 0.9, and currently it's 0.89. It's peak and low was 0.96 and 0.8. That a 10% bandwidth around a stable average.

Over the past year the DAI token on Ethereum has tracked the US dollar better than that, without requiring anyone to hold collateral off-chain.

https://coinmarketcap.com/currencies/multi-collateral-dai/

Pegging your currency to another currency and claiming it's more stable is cheating and doesn't really solve the problem.

Like the US can stop PayPal from providing financial services, they can too stop banks from storing USD collateral to such parties.

Also I don't agree with your "tracked better than that" claim: DAI/USD has a 15% drop and increase in a few months, about the same as USD/EUR in 5 years.

DAI is not backed by Usd collateral, the collateral is a basket of other crypto currencies.