It's more of a dig at people's obsession with celebrity, than anything else.
I dont know if shes so much a celebrity, shes not very "luxurious", though she is famous. Ofcourse, you know, jesus wasnt the only person to die on a cross, but alot of people look to him... I suppose its just people being obsessive over his "celebrity" as you so call it.

When an international "star" who has been around a good 10-15 yrs is diagnosed with cancer, you can only expect people to care. Sorry for your losses due to the disease, most people are affected by it somehow in their lives, but by having someone as well known as her, it helps increase knowledge and understanding, and support for the fight against it... so for u this is a blessing, but a sacrifice she pays for.