I think Singer's days have been numbered since Weinstein and Spacey. It was inevitable after that - the stories about him are everywhere and have been around forever.
What makes me curious is wondering how many people will be caught in that net. Seann William Scott was linked to stories about Singer's circle and various creeps for years. OLTL's Brandon Routh was Singer's Superman. Two young, cute writers Singer hired onto X2 and Superman Returns - his MO for hiring young guys he likes in bit parts or positions on various films - went on to do genre films like Trick 'r Treat and Krampus, and one is now doing the Godzilla sequel with Millie Bobby Brown from Stranger Things.
And Matt Bomer - who Singer wanted for Superman right off of GL, and who the studio refused to cast because he was 'too gay' - is married/partnered to Simon Halls, Singer's longtime publicist who just cut ties with him. It would not shock me if this hits them all.