I'm new here, so I'll just assume that the correct decision was made. Several users voted in favor of it.
But, why? I reviewed the list of on-topic and off-topic topics, but I still don't get it.
Is it because the question is not about understanding how the binary works, but rather about how to alter it? I think that can't be correct, because sometimes altering a thing is a valid tactic for figuring out how it works. This is similar to how sending different input can help you see how a thing works.
Maybe all that is needed is a comment on the closed question. But perhaps, the list of on- and off-topic topics should be updated.