In a sense, everything is "debatable", and everyone is allowed to have a different opinion.
Every car needs to be worth its price, whether the price is high or low. Chelsea simply doesn't want EVs to be "expensive", she wants low-cost ones. To simply say it's expensive and just with that putting MotorTrends evaluation into question, is somewhat disrespectful.
Saying that Model S is an "infant program", if you take this term in its objective meaning, would be pointless. Did she say the same thing when the Volt received awards? MotorTrend expressively values that Tesla, as a new company, has created something new. And she (ironically, as an EV advocate) just says: it is so new that "it will undoubtedly have early technical issues". Pointing out the obvious here becomes a way of rubbing something in which doesn't need to be rubbed in, and that is what I find disrespectful in this context. I find it annoying, and insulting towards MotorTrend. I'm not insulted, but I imagine I might be if I were a MT judge. It kind of implies that they missed the obvious. And, I think, only expresses that she prefers established car manufacturers.