What if the whole world would use BTC as payment method everywhere?

As we all know that all is going to be more expensive when using fiats as payment. The ongoing war is causing price spikes for gas and other goods. I just wonder if in current situation the world would use BTC instead of fiats to pay for an example for gas? Could prices stabilize or still go high because it still depends on relation between demand and supply? By all means I personally think that if BTC should be integrated and adopted into current financial system as fiat is adopted then it will be a little affected by inflation because taxes are subject to have higher rates and this artificially increases prices no matter in which form payment is made.