I think the "unpopular opinion" you are responding to is making the argument that if you don't want to engage in "mandatory fun", just quit and get a new job.

I don't necessarily 100% agree with that opinion (I'm glad there is recourse against sexual harassment in the workplace), and I have a ton of sympathy for employees in more coercive job environments where there are few jobs and it's difficult to just quit and get another one. In this case, though, I highly doubt "Cubik Partners" is the pinnacle of consulting in Paris. If it were me, I would have said "fuck these guys" and peaced out.