I think everyone is overestimating the effect of this. All it does is reintroduce some more supply into circulation, it does not change the total coin count or anything else. Once it happens, it is done and the network has swallowed the solution to the problem. We are not talking about something that will kill Bitcoin for example by completely breaking it. One of the reasons why people are exaggerating this is because everyone has been writing about this in a very negative way for a long time. If it is something that is an expected progression of the network's evolution, and if we start talking about it as something that must happen and something that is normal then the fears will lower over time. A smart attacker would not dump compromised coins fast, it is actually a very good way to build a country reserve.  

Shitcoin people inflate both their circulating and total supply all the time in many ways, relax.

You can reframe it to something more normal such as "some satoshi-era Bitcoin finally mined using quantum computers".

But wait, you may be thinking, wouldn't quantum "miners" have earned their coins by all the work and resources invested in building a quantum computer? I suppose, in the same sense that a burglar earns their spoils by the resources they invest into surveilling targets and learning the skills needed to break into buildings. What I say "earned" I mean through productive mutual trade.