The incident with the Infinite Train was ultimately defined by officials as an accidental derailment.
This was bound to make the Infinite Train hit the headlines once again, and the maintenance staff associated with the Infinite Train were also facing a series of accountability issues.
After all, the Infinite Train had been sent back for maintenance before, and it was only allowed to be put back into operation after assurances that there were "no abnormalities" were loudly proclaimed. Now, to have such a serious incident occur just after it started its journey, it was impossible for those who had previously indirectly mocked the Infinite Train in newspapers for being a "man-eater" to avoid taking some responsibility.
The only thing worth rejoicing about was probably that all two hundred passengers on board were safe and sound, which many might consider a miracle.
As for the existence of the Demon Slayer Corps, it was never mentioned from start to finish.