Honestly, Munsu, I find how you describe the WN version even worse than the anime. In the anime, he's just a pervert. In the WN, as you describe, he's a pervert, too, BUT he excuses his own misbehavior ('clinical').

At the end of the day, either is too crass.

However, I disagree that it'd be better if it was cut. Censorship is always bad.

That said, as I mentioned before, I'd prefer if there was MEANING to these ecchi scenes. Even if he was a sex-criminal, that'd be ok, a story can happen from there. But just showing that shit, no context, only makes it fanservice. Fanservice for loli fans :/