I'm not totally disregarding Jerry's abilities and importance though. And he did write most of the lyrics at first. Then Layne put more into the lyrics. The "dog" album is often referred to as "Tripod" for future reference. Lol. That makes me laugh.
You think Dirt was darker? It definitely had some brooding songs like 'Rain When I Die', 'Dirt', and 'Junkhead', but I always got a darker feel from Tripod. 'Grind', 'Head Creeps', 'Frogs', 'Shame In You'... guess it's a perspective thing though. Tripod always hit closer to home for me.