I am very sorry for people who have lost loved one's to this virus.
I find the decorations just gallows humour, and cannot get het up about it. I know people who work in A@E and they engage in gallows humour, an ex of mine who was a fire fighter saw some shocking things and he and his colleagues indulged in banter that to some would be distasteful.
Also when has Christmas been about good taste, I love a very minimal home , tasteful rugs and furniture, however at Christmas I have a real tree with loads of decorations, the tree is lovely but I dont worry if it is tasteful, its Christmas and time for fun, and we all need that at the moment.
It's a matter for the consumers whether they buy it or not.