I don't know about you but if you read the article, it almost sounds like this guy feels that because he's older and has so much "experience" that he should have been hired. It sounds like he sued Google because he was upset that the Interview didn't go as smooth as he hoped and he badly wanted to work for them. I've worked everything from Call Centre Internet Support all the way to being an Administrator, to Programmer that I am now. I wouldn't hire this guy judging from his attitude. It sounds like he feels entitled to getting this job. You know how old people complain that the young seem to think they deserve everything?
I've done many Interviews in my lifetime and from the those, I've found you can't blame the Interviewer or even yourself when things go wrong. Sometimes things go well and sometimes they don't. Besides, suing like this is sure fire way of burning your bridges. He's going to be lucky if anyone else is going to want to hire him now.