Handing a family money at a funeral if one can/chooses to, is normal and has been for decades if not centuries. Technology makes it easier for more friends to know about it and choose to contribute if they want. It's a personal decision anyway.
I'll probably donate my body to science so nobody has to deal with it.
Having been aware recently of two situations of necessity, my observation is most people like to help out where there is a need, even if it is a small amount. It feels good.