Ah, no, that is what the Mail Online and other tabloids report at regular intervals. I will believe it when I see Prince Philip being interviewed and he says "I don't want a State or Royal funeral". Philip, at this stage and his age knows full well that funerals are not for the dead, but the living.
I believe that he will get what he wants because his loving wife or, should she predecease him, his son will dictate the nature of the funeral based upon family wishes. The fact that all the details for Prince Philip's funeral have already been planned to the nth degree is also a pertinent factor.
As a point of interest I think it telling that a humble man like Nelson Mandala is going to have a very, very, grand send off because that is what his country wants. We don't know if he expressed his wishes on the matter.