Why not? It's for sure a meme, but it's used sincerely in many places as well. Let's all mourn in our own ways, and not judge others for mourning in theirs.
In case you really can’t see why: because it’s not actually respectful. It’s a dumb meme, it has nothing to do with Paul Allen, and– despite what you might think– a lot of people won’t know what it means.
Humor can be a powerful tool for coping with grief, but something like this reads as glib and disrespectful in a forum that holds itself to a higher standard of discourse than the broader internet.
At what point are we no longer celebrating a life well lived?
Paul Allen loved computing, and funded a living computing museum, along with with another museum dedicated to to pop culture. I wouldn't presume to know how he'd feel about a meme based tribute, but I sure as heck wouldn't feel the need to spit on one for not meeting my own criteria for respectfulness or sincerity.
RIP. Paul Allen - one smart cookie, who lived more than most of us ever will.
