In my opinion no one can kill bitcoin, because bitcoin has a lot of devotees and its market is also big. As much as the USA and China
will not be able to kill bitcoin. To be sure there is no owner of bitcoin, everyone has the right to buy it. And also bitcoin cannot be
controlled by anyone. Unless there is a situation where the entire internet is dead, or we go back to the stone age that can only kill
bitcoin. As long as still there are enthusiasts even though a little bitcoin will continue to exist. Because bitcoin is the future.
Unfortunately, it can be done. The other thing is that it will be too difficult to do it. Additionally, too many people support Bitcoin and those who even make an attempt to kill it will become the best-hatred persons. I am not sure that anyone is ready to become the object for beating. Thus, BTC will live long.
But, I don't see the possibility of killing bitcoin, they can only frustrate bitcoin usage and the users thereby dropping the volume, but no matter the frustration, there are some people that cannot be shaken because they know the worth of bitcoin, and they fully understand the technology, so they will not stop using bitcoin.
The only people that I know may fall for the problem are those using it as investment, but for people using it as means of payment, it would be absolutely impossible for them not to use bitcoin after they have already tasted the good thing about it that is not there in the fiat payment they have been using for several decades now, and moreover, you have to also remember that bitcoin is a decentralized technology making its transaction invisible.