Except thats not whats said at all. Lets have an analogy shall we? This is essentially the same as saying fantasy games needs elves and orcs to be fantasy. Now we can all objectively say thats wrong, plenty fantasy universes take place without either. Now here's that statement as an opinion, I think the best Fantasy worlds have elves and orcs. See the difference.
Now lets do that to his original statement, that a game cant be realistic without an antagonist and ntr. I think that an antagonist and ntr can make a game more realistic. See how the later doesn't exclude other games simply because they dont have something that is literally not required for realism, but instead shows his view while not shitting one other realistic games? How you say things make a difference.
And of course this is assuming he actually said something this pepega, he could have very well not.