Many people say that bitcoin is not used as a medium of exchange and that's true, it's not convenient to use it because transactions are slow and fees are high for small purchases. People don't use bitcoin to buy stuff, people use fiat because it's more convenient, right? We have so many really good mediums of exchange, does bitcoin need to be one of them and compete with them? Hell no.
So actually the adoption of Bitcoin for shops, restaurants or cafes is pointless, because Bitcoin was not created to compete with FIAT in terms of transaction speed at the cashier. That's right, it is impossible for us to pay for $ 2 coffee using bitcoin which will at least charge a network fee of $ 5 - $ 10.
And if the most important point is trust, then someone who uses Bitcoin as a tool to make money online, must be raised to the surface, this of course will be a promotional medium to gain the trust of new people (who don't know about Bitcoin). That way, the level of public trust will increase as they become literate in understanding the ecosystem related to Bitcoin.