It’s definitely a good start. We can’t expect for bitcoin to be immediately used by everyone as everyone else will still need to get used to things but the good news is other countries might follow the US and we will soon have bitcoin mass adoption
If you take the time to learn about the GENIUS Act, you will see that its focus is to establish a complete legal framework for stablecoins. The goal is to make stablecoins more trustworthy and popular, the bill does not mention nor has any direct connection to bitcoin or altcoins. This means that if other countries follow the US lead, stablecoins will be more widely adopted and will be the top choice as a payment method. This also means that bitcoin's opportunity is shrinking, not expanding, because they have found an alternative and it is not bitcoin.
Let's face it, the chances of bitcoin becoming a payment method are very low, and it has never been an option for governments.