I don't think it's really so much that the press "didn't understand" the electronic influences. There was a perception at the time that U2 were a bunch of old guys trying to ape what "the kids" were doing those days, which was electronica. (Bring in a bunch of producers and DJs to tweak your sound, and voila!) David Bowie was accused of the same thing at the time. I'm not saying it's right or wrong, but some folks would rather bands stick to their traditional sound. It can otherwise seem like trend-chasing, the same way classic rock bands "chased" disco in the late 70's when it was popular. It's all eye-of-the-beholder, of course. But I think it's dismissive to just say that the press or public didn't understand. I like the album a lot, but I don't know that it was particularly innovative or anything.