I have a love-hate relationship with RHCP. I love their singles, as does most people. They're catchy, groovy, just overall really, really well made. Then they have their B-Sides, which are usually just straight up terrible. It's almost like they make 3 songs, and then just mess around for the rest of the music on the album.
That said, Flea is still one of the greatest bassists around, Chad Smith is an incredibly underrated drummer, John Frusciante has such a unique style to his playing that you can definitely hear a difference when he's not involved with the band. Lastly, Anthony Kiedis is a character. He writes completely nonsensical lyrics that make absolutely no sense, I don't think I've ever seen him with a shirt on, and he sings in a voice that's so easily accessible to the audience that it's incredibly easy to sing along to.
Overall, an incredible band with incredible singles throughout the many years they've been around. As for this album as a standalone art piece, I'll give it a 3.