I don't agree with the assessment of HTDAAB. It is a great collection of songs. I do agree the production of some songs is not so great--Crumbs being recorded too loud and all...
Here is my opinion. No, HTDAAB is not very subtle. The songs themselves are, but in the end we had Bono explaining what most every damn song meant!
The songs that Bono felt needed some explanation:
Vertigo: "Vertigo, with all these people in it and the music is not the music you want to hear, and the people are not the people you want to be with, and then you see somebody and she's got a cross around her neck, and you focus on it, because you can't focus on anything else. You find a little tiny fragment of salvation there."
To some of you this may be blasphemy, but I think Vertigo is one of the most subtle tracks on HTDAAB. There is a LOT more going on in that song than most people give it credit for.
Miracle Drug: Explained by Bono to be written about Christopher Nolan and the "miracle drug" that allowed him to write "Dam-Burst of Dreams."
Sometimes You Can't Make It On Your Own: About Bono's dad of course. Had I not known that, it could have spoken to me much more personally--like a breakup. Instead, I only hear death.
City of Blinding Lights: Bono went and explained how this was about naivity and looking back at pictures of himself when he was younger, loss of innocence...ect. Had I not known that right away, I would have been able to go back and read the lyrics, listen to the music and try to figure it out...but...
All Because of You: I read somewhere that Bono explained it at a rock song to God or something like that.
Crumbs From Your Table: Another one with awesome metaphors, but Bono went and had to explain it again.
Original of the Species: "it's about seeing some people who are ashamed of their bodies, in particular teenagers with eating disorders, not feeling comfortable with themselves and their sexuality. I'm just saying to them, you are one of a kind, you are the first one of your kind, you're an original of the species..."
Another song with great metaphors. Luckily there are a few opposing explations to this song so it is still open to a little interpretation.
In the end, I think there COULD have been a lot of sublety in the lyrics of HTDAAB. For me, it's hard to relate to a song when the band explains what the song is about. In the past, it seemed like U2 would explain the song but explain it metaphorically, like "a phone call from hell" or TUF being inspired by Hiroshima/Nagasaki. That keeps my mind wondering much more than saying "It's about my father" or "this is about christopher nolan."