If you think all native speakers use complex vocabulary and rhetoric, you'll be disillusioned pretty qui..

If you think all native speakers use complex vocabulary and rhetoric, you'll be disillusioned pretty quickly. Native speaker picks up non-nativeness not from complex vocabulary or rhetoric, but in more fundamental things like basic grammar, use of a simple word and/or singular/plural, general smoothness, etc. Think of Japanese. People won't find it foreign when you don't use complex vocabulary and rhetoric. I once even had an occasion where this person believed I'm American because of a "wrong" use of plural that Americans often do. Just look at here or any SNS. I bet you don't find most of them use complex vocabulary and rhetoric. But if you use てにおは wrong a couple of times though, that's a big giveaway. And the use of "native level" usually comes with work. You can use the language at a native level for the work or you can't. It's not something that requires an opinion from an anonymous person on the internet, but thanks for your two cents.