The fact is that these people who are successful via the medium of media, often at a younger age, receive lots of adulation and following. The men in particular, tend to get a disproportionate level of support and love from younger women, something the men start to beleive is their right. Over time, they start to see any minor friendliness from young women as a come on and take it for granted that they can do as they like.
Unfortunately, even without taking into account the power disparity, the men are wrong and it’s likely that even those that thought they wanted a dalian e with a celeb, really they didn’t, but didn’t know how to stop something they may feel they started.
Basically men need to lear to keep it in their pants unless they receive a clear an unequivocal invitation to proceed. And even then, they need to be sure that their advances are wanted.