I think in a nutshell what this guy is trying to say is, if you want the out-and-out excitement of a go-kart, motorcycle or seat an inch off the floor driving experience of a Westfield, you're not gonna find it in a 350Z.
I've had (and still got) some of the bikes he mentions, and they're fantastic at what they do. They're sports bikes. My Ducati has a dry clutch, with an open clutch cover. Unless you knew this, you'd think it sounded like it was about to fall to pieces. Sounds like a socket set in a biscuit tin. It's my toy, it's not a commuter bike. At the end of the day, it's horses for courses.
I use my 350Z everyday and do about 1000 miles a month. I love it. I've had many cars and after about 9 months, I start getting bored and looking at what I can get next. I've now had my Zed 9 months and I'm now looking at what I can get next for it. (Yes I have Zeditis).
Take some out for a test drive. See if it ticks YOUR boxes on the list that YOU want from a car. It's a great car. And I'm sorry, but when did impressing ladies and blokes down the pub become a bad thing? Did I miss that memo?