With the view of the market and the reaction/behaviour of bitcoin in the market, when the price surges to a new ATH, when it starts to go on the down trend or correction of price, it affects the market and we hold on to some news that comes in to the system. This same thing goes true in the uptrend move.
Now, looking at the term of hacking the bitcoin network, its possible because the internet is not 100% secured, but it will take time before the big hack is made successful, and it is also said that the quantum computer is and will pose a treat to the crypto/bitcoin network. Will we say the FBI is now using it already? On the other hand, the bitcoin network has not really affected anything physically, rather making way for those with low income to have an alternate stream of income with the leisure time.