My grandmother (never a JW, or even interested), died a few months ago. Mum took her turn at the funeral to speak, she used that time to tell the audience what happens after death (according to Jehovah's Witness doctrine), rather than reflect on her mum's life. I don't blame my mum for that, rather it's a sad reflection on being a devout JW.
It's kind of like using a recent natural disaster to open a "Witnessing" speech. For most people it doesn't go down very well, especially when the person may have lost loved ones.