I’m saying this as if I am an eyewitness to my own workflow. Not as a commentary on your current workflow. So read what i say as if you and me both are anthropologists of some kind. 
Without watching your youtube, i intuited I can highlight. Cause the name does say highlighter 
Then when I saw the short cut key, Ctrl +X i knew I supposed to use Cmd+X on mac.
Then when I saw the highlights in the window everytime I press Cmd+X. I knew instinctively I am supposed to copy paste into obsidian.
After I copy pasted into obsidian. i noticed a [[Roam Highlights]]. That’s when I thought… hmm how do I change that or remove that?
After stumbling around, and still not watching the video, (Sorry!), I figured out the settings.
Then I noticed how the obsidian setting does not have bullets. So I tried to add them back.
After copy pasting back into obsidian (first using obsidian default then second time by adding bullets and indent), I then realized, it’s kinda silly to have bullets for my particular use case of highlighting this piece.https://slatestarcodex.com/2020/06/01/book-review-origin-of-consciousness-in-the-breakdown-of-the-bicameral-mind/
Then I went back to highlighter and turn off the bullets and indent.
Does that help?
In fact, I might even prefer a obsidian only highlighter. Of course I’m just one data point. I might be wrong.