SPAM is reserved to posts that try to promote something (selling a product, getting traffic to a blog/website), and only do that.
The text explaining the spam flag is clear:
This question is effectively an advertisement with no disclosure. It is not useful or relevant, but promotional.
What was posted can appear as an advertisement, but given that it is fully self contained it is difficult to see what the OP gains from posting it as such. This may be a misguided attempt at self promotion, but might also be a bad attempt at asking a question.
This really looks like the OP decided to use SO as a blog - I wouldn't call this spam, as I don't see anything promotional about it, though as something that isn't a question, it doesn't belong either.
A question that is low quality or unclear (ie. wall of code, no context and no actual issue posted), is not spam.
