Didn’t he marry his adopted daughter after? Also all the Farrow children seem to corroborate the idea that he’s a creep.
I believe Ronan Farrow supports Dylan. Moses contradicts them.
Soon-Yi Previn, who Woody married, was an adopted daughter of Mia, not his. Double-checking wiki, it looks like she was 21 or 22 at the time. For some reason, I remembered it as her being closer to 18.
I recall reading in Manhattan, in which in the movie, his character has a relationship with a 17 year old girl (which, even without background life info, should probably raise some eyebrows), may have been based off of a real affair he had back in the 70s. Googling, it looks like that was Babi Christina Engelhardt. It was a 7 year affair that started when she was 16 (a very different age than what he's accused of with Dylan, who would have been 7 or 8, I think, according to the accusations). If true, that would have been illegal, because the age of consent in NY is 17 (even at the time). There's a lot of states in the country where that wouldn't have been illegal, just... well somewhere on the scale of "gross" to "highly questionable".
The actual Dylan stuff... gets muddy I've gathered from someone who followed it a lot more closely than I do.
Dylan-stuff aside, Manhattan has questionable aspects
in the text in that regard, and its less questionable, real life associations don't make it seem any better.
As others have said, I don't want to get too deep into it since I didn't follow it too closely, but I have less invested in it since I never really got into his more mature films as an adult (questionable stuff aside, I just could never get into Manhattan. Since that was supposed to be one of his "big works," I never felt the need to continue checking out his filmography. I think I did pick up Hannah and Her Sisters at one point. I think he's just not for me).