I really don't get it.
Maybe this is part of the problem between planners and architects (me planner).
It looks just about ok to me - not spectacular, not particularly attractive - maybe questionable functionality?
Maybe Art but not to my taste. Maybe Modern Art (I know what I like ...etc.)
Not exciting for me - the Gherkin is exciting. La Defence is. New Lansdowne Stadium is.
I agree with Archipig.