So are they saying Bitcoin Core is not safe anymore and the we could be losing our Bitcoins at this moment? It is like they are actually making war with Bitcoin development and saying they are incompetent fools who might be hijack any time soon. I am scared now.
Yes they are saying exactly that but you shall not be scared because quantum computers are a bit different from what we are used to.
It is no like you can run any program on any given architecture right? The program needs to be pre-designed to utilize x84, 64bit, ARM etc. to be fully operational. In quantum computing it the computer that has to be designed with a specific task in mind. It can usually run only one type of equations, one set of programs or instructions.
In other words, IBM or D-wawe would have to build a computer specially designed to crack bitcoin, to crack it and "we" can always add "another zero" so in fact, it's all just a fear mongering. Blockchain is safe.