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You'll know it's their bot because the account is suspended and the profile page can't be viewed. They deliberately get the account shadowbanned and manually approve the posts from the moderator queue so users can't scrutinize the account's post history. I suspect they're buying upvotes because the posts frequently make it to the front page despite top comments being critical of the message.
FluentInFinance is basically just some botfarm made to pump some randos' newsletter. When I see the exact same posts on r/all as often as I do, even though I barely use the site, I just assume that people are either too busy arguing to question it, or anyone who notices it gets banned for mentioning it.
The latter is correct. Automod quietly hides any comments containing words and language commonly used to point out what they're doing. I'm astounded the site admins let such boldness fly.