Just to clarify some points:
This isn't about P.SE
This is about a question that went from SO → SU → A.SE.
This isn't about a P.SE-type question
The question wasn't subjective, or a poll, or open-ended, or "bad," or "junk." Or anything else that various people think might be welcome on P.SE.
This isn't about something being sent to the correct site before closing
It was a programming question when it was posted on SO, it was a programming question when SO moved it to SU, it was a programming question when SU moved it to A.SE, and it was a programming question when I finally closed it on A.SE.
This isn't about an off-topic or marginal question
Despite the title of this question, the original was on topic where it was initially posted. And it wasn't marginal, as that implies that there was a question or doubt about its value. I haven't heard anyone yet claiming that the question, as it was posted, was anything but useless.
The issue isn't even that:
the author is also sent everywhere for nothing
In this case, the author wasn't sent anywhere. His question was deleted on both SO and SU. From what I can tell, he has no way of knowing that it happened to end up on A.SE, or that it was closed.
And if it had been a good question? He'd still be out of luck, because he'd have no way of knowing that he had good answers on an entirely different site where he doesn't have an account.
The post in question was written by someone who (apparently) is not a native English speaker, and who has real difficulties with written English (based on the one I closed + his other questions).
The post had no value on any SE or SOIS site. It never did, and multiple migrations didn't improve it.
Migrating it from SO in the first place was a waste of time. Migrating it from SU was simply adding insult to injury.
Hmmm… As a result, I realize now that I'm not quite sure what this question is actually about, as @Robert's one link (my post) doesn't actually illustrate what I think is his point.