The thing with Incubus is that they matured in a way that they retained their interesting, intricate and eclectic edge whilst developing and maturing their style - a tricky balance that often descends into bland, over polished puddles of water, with no flavour, edge or idiosyncrasy. SCIENCE was raw and crazy (which is one of the reasons I love it so much), but they became a fuller sounding, cohesive band whilst retaining the subtle nuances and change-ups that kept them individual and original. (At least up until Crow Left of the Murder - I stopped listening after that, not sure why)
That first Silverchair song you posted suggested to me that they appeared to have slipped into the realms of sappy, middle of the road drivel that you can hear all day long on Radio 2. They seemed to have matured into a bunch of pussies! However, that second song was much better, although the "scream four times" stuff is cheesy and cringey and turns me off big time.
Maybe I should give their album a listen though. I had no idea they were still recording up until so recently. I'd heard that Daniel Johns had gotten arthritis in his hands and couldn't play anymore. Must've been bullshit.
Oh, and I used to have that guitar, in black. Loved it!