I've read that article before. Funny stuff, but I can never take NME writers seriously. They appear to treat reviews as a personal star vehicle which is more about showing off how clever and witty they are rather than the actual music they're reviewing.
As for the eternal 80s vs 90s debate, as a later-(beautiful)-day U2 fan I don't hold one decade superior to another, as they both have their pluses and minuses for me. I doubt I'd be as much in love with U2 if there wasn't a funkier, sexier, more playful side to counterbalance their 80s music, which could be almost too overbearingly serious and intense at times. I also find the 90s work to be more complex and sophisticated musically, lyrically and thematically, and with the exception of POP era, it's also my favourite U2 period visually.
On the other hand, if you want to talk about the iconic, distinct U2 sound that will be remembered in the years to come, then IMO none of their 90s flirtations with electronica surpass the sound they've created in the 80s. Which is why I'm often puzzled when somebody talks about the 90s as U2's innovative and pioneering period, when it was in the 80s that they've come up with the style that so many other bands imitate and borrow from.