i honestly thought bono's new singing style in popmart was unique.
maybe its because i'm very late in coming to u2 (elevation/electrical storm were the songs which made me take notice) but i never felt that u2 was about the vocals, and actually i loved beautiful day because it really connected to me because it seemed bono purposely sang in a rough voice and that to me bono is just saying hes the average person... so yeah, vocals don't matter to me that much as long as theres singing going on and not just missing lyrics left right and centre (i think he did that during WOWY during popmart mexico)
other thing was bono's high pitched childish vocals in popmart really pushed forward this idea that bono was a lost soul trying to find his way (theme from staring at the sun, playboy mansion, igwsha, gone, wake up dead man)