China's bitcoin mining ban? Nah, all miners will do is shift to other nations with cheap electricity.
Environment effect? this has been debunked during bitcoin's bull run in 2013,2017 and now 2021.
51% attacks? too expensive and no incentives for those who might pulled this stunt.
Crypto regulations? we have seen worst already, and yet bitcoin is still up and running.
Crypto exchange hacks? might put some dent on the price, but in the long run, bitcoin will bounce back.
FUD's? bitcoin is so resilient and proven itself against this FUD' mongers and negative news.