He didn't say those exact words. The closest I could find to that was said was when he was asked, "From your original concept, has there been any significant deviations?", and he answered, "So far, the only deviations are that some events have been introduced earlier than intended, while some events have been pushed back for later." So, he didn't actually say anything shouldn't have been in the game at all, he even answers in a later question when he was asked if there's anything that he "didn't like adding but thinks is necessary", "No, I haven’t had that feeling yet".
So maybe he doesn't think that moment was a "too soon" or "too much" moment, or maybe it's just much less serious than what people here are making it out to be, but it is notable that it's almost immediately forgotten about in Ep 4 when staying with Bella and how she's now much more willing to be intimate with the MC.