One thing I've seen happen with some of these accounts is they remove a lot of their posts after some period of time.
So they make somewhat consistent 'generic' posts that do not get remove, but do not really convey any signal on their actual views.
Then in their last 24-48 hours there are more political style posts/concern posts that only stick around while the article/post is getting views. Then replies disappear like they've never happened so you can't tell it's an account that exists wholly to manipulate others that has been doing so for months.
Then quite often after a month or two the accounts disappear totally.