Formation of nouns from verbs has been going on for the entire history of the language. It's not a novel offensive concept. For example, the word "kidnapper" is the original form of the word, first found in the 1600s. The verb "to kidnap" was constructed as a verb version of the noun. Given the centuries-old history, it's hard to argue that construction of verbs from nouns is per se
Oooohhh, and then there's the need to use many syllables to appear more intelligent.
Instead of car, say vehicle.
These words aren't synonyms. "Vehicle" describes any machine or device used for carrying something, and also has an even broader metaphorical use (e.g. IRA as a "savings vehicle"). If the speaker wants to focus on the nature of the device as something that transports people, "vehicle" may well be a better choice than "car", which brings to mind specifically one kind of vehicle. In writing and speaking, we're often forced to choose between words with similar meanings, and the choice of which to use is based on the expectations of the audience, the intent of the speaker, and other relevant factors. I agree with you that simpler language is generally preferably, but good writers don't follow rigid rules like "never use the word 'vehicle'", because that's silly.