Oh right I thought you meant they should say exactly the same message. Agree that sterner messaging is required in this moment but I think it's reasonable for governments to consider what are the negative side-effects of certain kinds of messages.
The question is what you're trying to achieve by saying "you have blood on your hands"? If it isn't to get these people to change their behaviour, what positive effect is it intended to bring? It might make some people feel vindicated for saying the same thing all this time, but it isn't going to change their behaviour either. And if it comes with a legitimate risk of further disillusioning people, then that choice of words can just lead to more blood. No point in winning moral victories if it leads to more losses as a result.
I think it's good that the doctor said it. In that case it comes with some potential benefits because people do trust them more than politicians, and it comes with fewer risks because they aren't speaking as an elected member representing the public. If the government chose not to weigh up those risks and benefits and it did alienate people, it would be a bad decision. It doesn't really matter what people are entitled to feel, it matters what they do feel. You can tell them that's a stupid thing to feel but they'll just ignore you and let those feelings guide their actions. And that brings dangers.