You've been a member since 02 and this is all you can come up with?
There's no evidence that Bono was in the studio any than the others, in fact there is a lot anectdotal evidence to the contrary. If any album was said to have suffered from Bono's absence it was ATYCLB, even the band members stated that Bono wasn't around as much...
Then again lyric and melody writing is much easier to take on the road then any other part of music... so this premise is pretty weak.
To begin, I have not listened to the album yet, I'm waiting for March 3. However, why is it that every opinion someone gives that you do not agree with on this forum must be verified or proven with some sort of scientific proof?
Aren't you the one who continually says music is subjective? Well if it is, why are you telling someone to prove their subjectivity?
This is all "you could come up with"? What exactly is that supposed to mean?
Additionally, how the hell do you know where Bono was during the recording of this album? I'd say there is tons of circumstantial evidence which points to the fact over the last five years Bono was not in the studio as much as he should have been. Off the top of my head you have:
1. The fact the album took 5 years to make- the longest in-between time for them
2. The fact the album was delayed from October to Christmas to March
3. The fact entire recording sessions were scrapped.
4. The fact over the past 5 years Bono has been involved in big charity events and/or meetings which HAVE taken up his time on and around recording session dates.
All of this could be arguably connected to Bono being absent. Throw in his recently weak lyrics, and I think the OP has at least a valid point to consider.
Overall though, why is it that you respond to everyone's post with an automatic dismissal of their opinion, by ironically, giving your own just-as-tentative opinion?