[marcellus23]

> It's clear that it's not the noun "content" but the adjective, defined as "pleased with your situation and not hoping for change or improvement".

No, it's not the adjective. The other 2 features are nouns, so this one must also be a noun, since it's a parallel construct. Also, they're all "features", so they have to be nouns by definition. And what would the adjective even be describing?

In this case, the "content" refers (I guess) to the content that's being communicated, though it's poorly phrased.

The Wikipedia excerpt is badly written, whether you agree with the GP or not about the article being biased towards women. It's not even a paraphrase of the original source, which claims the content is the communication itself, whereas the article claims the content "represents the ability to communicate personal information" — which is pretty meaningless.