Do you think that someone is a bad parent when they don't love their kid?
No, some kid/Adults are not lovable those who bring shame to their family by being a felon or who are mean & rude.
That is the definition of a bad parent
Yes even parents of serial killers mostly still love them.
You don't have to love someone to take good care of them in the same way a parent who loves a child sometimes can't properly care for the child well. But you weren't looking for an honest answer were you? You just want someone to agree with you.