Literally who didn't sign that thing? Signatures aside a great deal of his work is very anti patriarchy and while there's some SUPER uncomfortable stuff he's been praised frequently by women he's worked with to approach that stuff very well on set and make what could be a really uncomfortable experience feel like pulling off some damn good acting, which it is. There are lots and lots of stories about his overall sensitivity as a director and care for actors in general but especially in more vulnerable scenes. I think it would be foolish to dismiss the guy over the petition. You'd also have to not watch pretty much most movies.