Bitcoin is not stable and reliable enough to be safe haven. Let's be realistic. Fiat is still doing quite okay and it's pretty stable, even though usually somewhat deflationary. Then there's gold which has a long history of rising up in price, and rarely demonstrates high volatility. Bitcoin might become a safe haven if major fiat currencies fall to hyperinflation, but it's unlikely and situational. Bitcoin is young, volatile, and wasn't made to be safe haven, so while some might use it in this way, this can end badly with people losing a lot of money due to usuing Bitcoin not the way it's supposed to be used.