I do not believe this.
The problem is that X-men have gone through a number of similar situations so they always need to raise the level on the despair scale otherwise readers will not take the threat seriously.
Some are saying that the current situation is worse than decimation or inhuman cloud which is not true
.
First it only seems worse because most X-men are absent but they are not dead.
Second the cure is a trap is not what it seems so no mutant will lose their powers at the end of this story.
Third the killings are to give a dark tone and shock the reader but this is not news how many times we see mutants die and then come back to life as if nothing had happened ?
Loa is the only one who might be loss but for sure Blindfold will return faster than people imagine.
In short the inhuman mist, the Legacy Virus, decimation were much worse threats because they did not have an easy solution.
In that case on the present threat as soon as the X-men come back and the truth about the cure is revealed, everything will return to normal because it's just a matter of punching the villain and revealing the truth.