The Palins are a loving extended family, who can help raise the child. If a child was being abused and had no suitable extended family, then it would make sense to remove a child, but this is not the case.
No one is arguing for the child’s “removal” if that implies state intervention. We’re arguing that Tripp deserves married, committed parents, and since Bristol cannot provide that, Tripp’s interests would be better served by Bristol finding him parents who can.