I mean, I can feel bad for his kids (especially if they’re too young to understand, no idea how old they are) and still be of the opinion fuck that guy. The two are not mutually exclusive.
Grief is not a conscious decision and we do not get to choose who we will mourn for and because of that, I do feel for them, but the rest of us are under absolutely no obligation to mourn along with them.
Gigapet? I had the koala one