If that boat is “speaking the truth” versus “Ignoring the truth just to be nice because someone is dead”, then I choose that boat with open arms, and shall sail with my speak-truth-to-power brethren with no weight on my conscience.
I accept that your opinion of me and my boatmates is lowered by this stance. But I do not hide who I am or what I believe, and if I would speak ill of someone in life, then I choose to also do so in death.
Further, I welcome anyone to do the same at my funeral. Tell it like it was, please. If I was an asshole then so be it. If people are going to tell others how nice I was, then I want it to be because I was, in fact, nice, not because some IMHO antiquated rule of decorum mandated they do so.