The entire premise of the game is based around people seeing the girls naked. The main kinks are embarrassment and humiliation, and there has been an audience in one way or another from the very beginning. The main character clearly doesn't care about other people seeing his students naked (in fact, he thinks its good for the student) and that was established in the first minute of the game. To say the game is changing direction is utter nonsense. If you've been fine with everything so far I fail to see how anything coming up is going to be a problem.
I also took a vote with my patrons (the people who fund the game, without whom the game wouldn't exist) and the majority was happy for me to include occasional scenes like this as long as it was relevant to the story and not overdone. I know some people don't like it, however, I refuse to be dictated to by a vocal minority. That would be the real tragedy. If you write a story for everyone, you write a story for no-one.