I think he might be celebrating that the number isn't higher. I think it's a bit OTT to imply that anyone is jumping up and down in glee at reports of another death.
Remember that about 200 of those deaths are purely random and are little or nothing to do with coronavirus. And an unspecified number more are those people who could have been vaccinated and chose not to be - you know the old proverb about leading a horse to water. The number of people who have taken proper precautions against coronavirus and have died anyway, is pretty small, especially in consideration to how it used to be. That is something to celebrate.
I would respond to that by pointing out the mandated wearing of face coverings in enclosed public spaces might have made that figure even lower. As I don't think that is going to happen there is no point arguing for it anymore.
However, what I really have a problem with is someone who has decided he knows better than the world of science and public health and refused to have a vaccine thinks he has a right to gloat about the better than expected, by some, amount of cases when he has refused to contribute to the main initiative to cause that.