Ok, Obviously I need to spell it out in simple terms. My opinion about Opeth's use of melody and dynamics are irrelevant. About as relevant as which clothes they wear. Get it? Secondly I am yet to see anyone show me that they even know what either of those terms mean. This nonsense about talent though. What is talent? Its an arbitrary (that means irrelevant or unsupported) term. It assumes that someone can excell at something without any need to learn it. Also that they are excellent beyond all other normal measures. Which I don't believe is a subjective point of view. So no, I don't believe they have any sense of lyrical talent. Whether I like or dislike a given thing is about all I can comment on and I reserve my opinion. It has nothing to do with 'talent'. So to answer your initial question, yes I did need to go to the trouble to set the parameters for those definitions. What is the point of arguing a point when you really have no idea what you are talking about?