Positively negative I guess ;)
You do have to laugh at these overly negative "the sky is falling in" type posters who insist everything is wrong. In my experience, people who say that are usually the ones to blame and have outgrown the sport, and there's nothing wrong with the series. By all means have an opinion on something, but look at it this way.
V8 Supercars is probably the best touring car series in the world, in terms of driving talent. Look how many international drivers with good records have struggled to be on the pace. It's probably the most spectacular form of touring car racing too. BTCC is a smash up derby, DTM is pretty tedious most the time, and WTCC isn't what it used to be.
V8 Supercars have blue chip sponsors like Red Bull and Pepsi etc. Only DTM can rival that. I'd say the V8s are aesthetically miles better than BTCC, WTCC and DTM put together.
The grid is becoming more diverse. I'd take a championship with "only" 22 cars in it with Ford, Holden, Nissan, Mercedes and Volvo present, over a 29 car series with only Ford and Holden. Does it matter if they're a representation of road cars or not? Because find me one touring car series that does apply to that.
A little bit of balance wouldn't go amiss when you're slating everything, and saying the "series needs saving."