This entire question feels like it's conflated with recent unrelated allegations/revelations about misconduct in the entertainment industry (and beyond).
Nevertheless, it was addressed at the time of the first movie
The film’s executive producer David Heyman, when asked about Depp’s casting and the controversy surrounding the abuse allegations, said: “Here’s the thing: Misogyny, abuse, maltreatment of people is unacceptable — but none of us know what happened in that room. So I think it would be unfair for me to be judge and jury, or for any of us to be judge and jury.”
With thanks to Gunnar we now have a statement from director David Yates
“Honestly, there’s an issue at the moment where there’s a lot of people being accused of things, they’re being accused by multiple victims, and it’s compelling and frightening,” Yates said. “With Johnny, it seems to me there was one person who took a pop at him and claimed something. I can only tell you about the man I see every day: He’s full of decency and kindness, and that’s all I see. Whatever accusation was out there doesn’t tally with the kind of human being I’ve been working with.”
“By testament, some of the women in [Depp’s] life have said the same thing — ‘that’s not the human being we know,'” Yates said. “It’s very different [than cases] where there are multiple accusers over many years that need to be examined and we need to reflect on our industry that allows that to roll on year in and year out. Johnny isn’t in that category in any shape or form. So to me, it doesn’t bear any more analysis. It’s a dead issue.”