Probably not, there's a lot of good step father's out there that are WAY better than the scum the kid's biologically related to, same with step moms. We can easily remember that German guy that kept his daughter imprisoned in a secret basement to know how evil biological parents can be.

Hell I still remember the psychology study I was reading about that girl in forced isolation for years in California I think, couldn't even talk or do basics when authorities found her.