Given how many times he's put his face on something then sold it to someone there is definitely a large dose narcissism but I'd love to have his business mind. And to hear him talk about the early days before KISS proves he had a confidence in himself that very few people have, I doubt he's lost that.
Relevance does change a lot, I couldn't care less about a band writing songs about a dickhead movie stars or politicians (unless it's done comically even then it's hit and miss) and the problem is that while they are relevant when they are written they loose relevance. Look at Maiden's stance against Maggie Thatcher, half their fans today don't even know who she is but the song had relevance at the time. Yet a song like Master of Puppets to me is as relevant today as it was when it was released because I know too many people that chose that path for their lives. But when it comes to relevance of a band I don't just judge by their lyrics I also judge by how relevant they are on the world stage, are they forgotten if they are out of the media spotlight for more than five minutes, do people still flock to everything they do. Bands like the Stones, AC/DC, Metallica, KISS and probably others fit that bill.