I prefer volatility seeing what elastic supply and infinite coin printing can lead to.
UST is algo stable, the biggest ones are not the same. They all run a Hong Kong dollar peg model essentially and have proven to work.
Volatility gives reason to not go bitcoin standard, it's all speculative meaning the number MUST go up.
Even highly inflating USD is beating almost all other fiat out there, including decade long deflating JPY. it's obvious if you trade FX that inflation doesn't really kill the currency competitiveness, it's national growth that the stable value it enables.
UST?
Coingecko shows only one UST and that is Luna Ust, and we all know how this ended. If there is another so-called stable coin out there please point it out to me. As proven to work, again, what coins are we talking about?
Second, you say volatility gives no reason for a bitcoin standard and yet the US is also pretty volatile as it comes to the Euro for example, or the Swiss Frank, the Euro has lost 20% compared to the $, and yet is still the second choice when it comes to foreign reserves. Again, I don't understand the reason for a coin that is pegged to a fluctuating real currency other and fast transfers between exchanges, there is simply no need for it, just load $ or Euros on your card and that's it.
Stabilizing your currency against a currency whose control is out of your reach is inviting trouble.