Because most actually don’t care and are perfectly happy for religious people who are able to find homes in religious communities if that’s what they want and those communities help build rather than tear down a person.
There are some who trying to sell books with proactive titles or generate clickbait engagement and every now and then some atheists will blow off steam and implicate all of religion even if they know better intellectually. For those who experienced spiritual abuse in former religious communities than that can be a type of therapy.
Atheists are also working to partner with their pluralist religious allies to push back against the existential threat that people like Ken represent. It’s unfortunate but Ken and his oil billionaire backers have somehow won the branding war over who is “Christian” or what is “religion” and that shouldn’t be allowed.