I don't think so that war is favor for us who are crypto investors and I don't think it is good for the entire crypto community to have a war in order to increase the value of the cryptocurrency as well as all the coins including that has the biggest impact which is the bitcoin.
There are a lot of reason why the cryptocurrency suddenly pump up very high when the Iran and the United States of America declared a war from both parties, first of all bitcoin is back by united States dollars do probably it would be have a big impact to the cryptocurrency that has been a valued of a dollars.
I do not really think that bitcoins are been ever backed by the United States Dollar. There might be the most common trading pair of bitcoin with the U.S dollar but it might not really be backed with those. Bitcoins are a independent currency which runs on the blockchain network so we can call bitcoins being backed with the blockchain technology rather than the U.S dollar.
On the other hand, we can see there are a number of HODLERS/Investors from the United States who are holding bitcoins and the war like situation between the US and the Iran might derive the price for bitcoins on the peak as peoples residing in those specific countries might surely think to move onto bitcoins over the war ends.