Nor did he ever show it as a bad thing. I disagree about it being commentary, because there wasn't any comment on the topic after it was brought up.

I just don't get the impression that there's much more below the surface of that scene or that piece of worldbuilding. I think Terry just wanted to write a scene with two attractive naked women covered in mud in a tunnel who then find their way out into the basement of a strip bar and have to return to the Watchhouse in stripper outfits. I mean come on, it sounds and reads like someone's fetish. And while it is certainly a trope that women in fantasy are hypersexualized, I didn't see much commentary about it going on in that scene. There was commentary on the sexualization of Angua in the earlier Watch books, but very little in Thud, IMO.

Don't get me wrong - I love Terry's work, Thud was my favorite in the Watch series and I don't think this makes him sexist or anything like that. I just don't like it when people bend over backwards to defend every single thing a person does. Not every single idea he has must be perfect. A few mistakes don't detract form his work.