He’s sick. He probably has cancer, still. He may be dying. You are using one or more of his company’s products right now, and you love it. In the last decade, they have changed your life more than any band ever could have.
There’s nothing wrong with turning to humor to deal with grief, but it would be nice to see a moment — just one! — of genuine sympathy on Twitter amid the usual “who can be the biggest ironic asshole” contest.