I don’t know.
I don’t often ask people if what I do is considered NTR, but the few times that I do, the answers were no.
Maybe it is the case that people who dislike NTR thinks my works are NTR, while people that loves NTR don’t consider what I do NTR.
I don’t know how to square this, because people do tag my work as cheating and what not. But when it comes to directly asking people if this is NTR, you are currently the only one in recent memories that said yes.
I don’t have any sort of conclusive evidence in either direction, so I am just not going to worry about it.