I won't dox this user because I don't see anything beneficial from doing it, plus I don't even know if this activity would be worth it, frankly. But this almost looks like a new user who doesn't completely understand how the platform works, yet it looks like this profile was created over a year ago.

Looking down this list of the user's activity from the past 48 minutes, it's virtually the same thing for every listing with a few exceptions that I can see.
For every upvote, there is a subsequent unvote of the post within the same moment.

Why?

What purpose could this serve?
Please understand, I'm not trying to call anyone out or point fingers at suspicious activity, I'm just curious to know if this could be viewed as anything but a waste of time. I understand that unvoting something you upvote removes any possible curation points, even if you re-upvote, and to my knowledge the author won't get it either. So I'm stumped.

Anyone have any theories?

EDIT: Upon further investigation, it appears the @cheetah bot has this user on their blacklist. I think this convern has been answered. Looks like this person is either just a bot or someone doing a very poor job of what they think is gaming the system.