I was in Tokyo last year, and spent a day in akiba. I disagree with the overall tone of the article, and would still encourage people to visit (if you wanted to in the first place!)
There's still lots to do. The anime museum and gundam cafe by the station exit are worth a visit. Do a loop around ending up at Yodabashi and you'll still see your fair share of tech and game shops, some new, some "retro". I never went into a maid cafe, but it was still a novelty to see maids on the street and tell them "arigato gozaimasu" for my free "gift" (some promo tat, nothing exciting).
I think the biggest problem is that the world has caught up with tech. Before worldwide shipping and engadget, maybe a small part of tokyo could lay claim to being a tech-center, but now anywhere with an internet connection can be as informed, this is hardly akiba's fault.
(The japanese are a little to blame actually. For years we heard how amazing their mobile phones were, but while I was there it seems they've given them all up for iphones.)