Ever since my country has started to be lenient into BTC, merchants nowadays can utilize the option of demanding BTC as payment to their products. Not to mention, GRAB (which is Uber in the Philippines) has this option where you can convert your BTC into their credits so you could enjoy their services being offered to the public.

Though back in 2018-2020 I have constantly used BTC as payment (I viewed it as fiat also), I understood that the value of it is much more valuable due to its inflation and limited supply. That is why currently, I save most of my BTCs and HODL them for long-term value.