Men and custody

Me

I was just watching a video on Facebook about the Australian man whose ex wife took off with their children. I was reading the comments and many people blamed the man saying he was probably abusing them and that it was unfair when he had sole custody of the children. I also saw a comment from another man who was in a similar situation. He had full custody of the kids and the mom went off to be with someone else and didn’t show much interest in the children. He said that he still gave her the option of visiting them whenever she liked and FaceTiming/ calling them. He said it was like this for years but she had them one day and ran off with them. Many people were still saying that there was something he must have done to make her do this. I just find it so unfair. There’s many men who do want to be in their child’s life but they are kept away or even situations like this where the kids are kidnapped and he still gets blamed. If the roles were switched no one would be blaming the mother. What do y’all think though?