I would say the artstyle play a huge role in it.
Along with that, some engines might be easier to fuck up the intro to the game (RPGMaker as a lot of gems but also a lot of stinkers as indicated by others in this thread).
Honestly, I'd say that if he actually added to the conversation in those threads it would not be spam.
But if he just went in there and posted something completely out of left field then I would say it is spam.
VNDB has some pretty comprehensive definitions, as well as different classifications of NTR (types A, B and C):
Netorare: You must be registered for see element.
Netorase: You must be registered for see element.
Netori: You must be registered for see element.
As well as:
Reverse Netorare: You...
Yeah, seems like a lot of people have been having performance issues. I seem to have luckily dodged these.
The thing is that this was the game that Sony was backing as part of their Chinese investment but hardly had any marketing.