The baby absolutely didn't deserve to die like that. The parents, on the other hand, are experiencing the natural consequences of their own choices, literally what their actions brought on and deserved. Nobody has to say, "I told you so", but neither do they deserve anybody's sympathy.
This is no different than parents refusing to get a car seat for their child because they think seatbelts take away freedom, getting in a car accident, and the child dying in the accident. The child's preventable death is the parent's fault. They created the environment that was unsafe for the child because they were arrogant enough to believe they knew better than decades of evidence. In this car seat scenario, parents might even be charged with endangerment or negligence.
Or the grandmother who didn't believe her granddaughter's coconut allergy was real, because she knew better than the baby's doctors, and put coconut oil in the poor baby's hair and killed her. That grandma doesn't deserve sympathy for what she did.
People believe themselves to be part of the in-circle as "one of the good ones". My father is a Trump-supporting anti-immigrant immigrant. But when he says "immigrant", he really means Hispanics and blacks, not Asians like himself.
I even know an Afghan guy who loves Trump. He grew up under the Mujahideen and then the Taliban, so he hates Islam. When Trump says Muslim countries are bad, this guy 100% agrees. He thinks he and Trump are on the same side, because he's no longer Muslim. Trump, or course, would have him arrested and deported on sight for being brown.