i'd say "your heart is on my sleeve / did you put it there with magic marker" conveys much more meaning than "you plant a demon seed / you raise a flower of fire" or, more similarly, "all the promises we make / from the cradle to the grave."
I think there's no question his lyrics are probably more literate now than they were in the 80's. The question, at least to me, is not how much complex meaning each line contains (however awkwardly), but how well they work as lyrics...
as part of the song.
Which is, after all, what we're talking about. Pop songs. You can be attempting to convey any number of ideas in a lyric...philosophy, religion, politics, whatever...and those ideas can be brilliant, but the lyric that contains them doesn't work in terms of the song, then they've failed. Yes, his 80's lyrics made for better songs, even if they weren't as "literate". They just worked better. The 90's, probably even moreso. Of course, the music had a lot to do with that as well. Most people will forgive iffy lyrics if the tune is good enough (e.g. Breathe).
I think a lot of Bono's lesser 00's output lyrically (and count this song among them) just falls flat. I'd rather him convey simple idea beautifully, and poetically, than a complex one in the awkward and stilted fashion that plagues much (but certainly not all) of his recent work. Pride, for example, isn't the most complex song lyrically (even containing an infamous mistake), but, as a song about a great man, succeeds in so many ways that Ordinary Love fails. Is anyone going to spend the next 30 years singing Ordinary Love? Is there anything in Ordinary Love as powerful, or able to evoke the character of the subject, as much as "
Free at last, they took your life, they could not take your Pride"? In fact, is there anything in Ordinary Love that would tell you the song was about Mandela if the single didn't have his picture on it? IMO, the song is a failure on every level...lyrically, musically, and as tribute to its subject.
Perhaps in the 90's he hit the sweet spot, lyrically. As you point out, that decade certainly has some of his best.