Bitcoin is better than fiat for so many reasons all of which have probably been stated
I thought it was very funny when you say bitcoin better than fiat, some people prefer bitcoin than fiat, one reason for their income and profits is by bitcoin, so they think that the world of bitcoin more better
And I guess there are still people who are depending on both, they are making good profit with bitcoins and there are some who are still depending and earns good money with fiat.
But that's the reality that bitcoin investments are even more reliable and can have greater profit because of its decentralization.
When it comes to transactions, bitcoin only charges cheap fees.