Thanks for replying, @vmedea!
I did some research on my own, and unfortunately (from what I found) there doesn’t seem to be an easy way to revert, it’s more-or-less a manual process (that can be scripted), it’s basically going through the logs, finding out which packages were updated, and then downgrading them.
That’s an interesting idea about waiting for the next PureOS update. 
I’m not sure what I’m going to do yet, nonetheless thanks for the reply! 