Huh? Upsurge in new followers: fake accounts?

What's going on? I noticed a strange upsurge in new followers recently. They'd come in in batches and all share a few common characteristics:

• They have no profile picture
• They joined within the last three months
• They each follow about 28 thousand profiles (curious!)
• They each have around 1 thousand followers already
• They all have 100% voting power and $0 vote value
• They haven't left any comment, ever
• They seem to only post videos

Here's a screenshot (from busy.org) of the most recent batch:

and a screenshot of a typical profile page:

Here are a bunch more profile screenshots to show the similarities:

Here's a screenshot of an earlier batch of followers:

With more familiar looking profile page examples:

and

And yet another batch of "followers":

Have you noticed the same? What's up with this? Are these fake accounts? These kind of "followers" have no value.

Tagging Hive account@steemcleaners and Hive account@spaminator.

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