I agree this manga was cooler when it was constantly asking questions about sexual morals. But as someone else said, this is a slow burning joke. We don't actually know how Ichikawa will react at all, because she's already getting used to this world. It's just that she's a closet pervert that has learnt to read the air after speaking up. You know. Like "normal" people.
I hope next chapter goes into that. I miss Ichikawa LOL