Never mind how The Crucible fit into a bigger picture that we now know has changed pretty fundamentally.
No. They were concerned that depowered mutants would choose suicide as a method of regaining their powers and noted that if all of the millions of depowered mutants did so at around the same time it could overwhelm the Five, so Apocalypse offered the Crucible as an alternative. It was never stated that a mutant who commits suicide to regain their powers would not be resurrected.
The requirement of the crucible implies a penalty against suicide. Otherwise why would anyone do the crucible over a painless suicide. Just because they did not directly state the rule, it’s clear there must have been some edict saying you can’t use suicide. Apocalypse even says a person who kills himself is not worthy to be reborn. You can’t make system like the crucible and then also say “but instead of being beaten to death you can choose euthanasia. That doesn’t make sense.
Just like to also point out that I don’t expect it to make sense I am just noticing the plot hole. Plot holes happen in group written projects all the time
The Crucible is basically just a queued suicide by Apocalypse. The only penalties for committing suicide to regain powers via resurrection implied by the text are that it is culturally frowned upon.