I think part of the problem is that it is assumed that people who own a 350Z must somehow have a basic level of knowledge about the components of car performance but there is no reason why they should. When you have around sports car for a long time it's easy to forget how much you learnt along the way - it would be quite a list if you think about it - given that there are entire books written about gear ratios, suspension geometry, weight distribution, tuning, etc, etc.
A common example is the "I want/need more bhp" type thread - when it is quite likely that bhp isn't the solution to the perceived issue.