Lwin’s Mother forced Scotland Yard to investigate, Scotland Yard found nothing wrong / no laws broken. If anything the controversy increased album sales.
if that was considered as child pornography, what about prior releases such as Blind Faith by Blind faith, or Houses of the Holy by Led Zeppelin , or subsequent such as Nevermind by Nirvana
All contained naked underaged children, but no, go after Malcolm McLaren the nasty man who gave us the Sex Pistols