Um, proof? The fact that she's been actually active on the site under her own account shows that clearly she knows how to use the site, so that argument alone is moot. I don't know how you can prove she didn't like the users unless she straight up said that.
She tried to share a link to a private message. That's the equivalent of my mom emailing me and saying, "Here's the picture - c:\\user\desktop\pic.jpg" - it demonstrates a fundamental misunderstanding of how the site works.
Then everyone who replied was shadowbanned and every post was deleted. So no, she literally didn't know how to use the site.
I'll hazard a 'yes' here, based on the comments (see top comment, below). In the interest of fairness, admins can see the private links, so Pao may have just posted to the wrong Reddit, rather than doing something ridiculous (though it would look that way to anyone not familiar with admin powers).
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kciuq1 1758 points 3 hours ago
Maybe the first priority is to learn how reddit works.