The screenshot is an example of someone making a reference to "removing fingers" (direct quote from the image) to make someone "care more" (direct quote from the image).

Regarding all the asterisks, your guess is as good as mine. Perhaps it is to make the text look scarier and more menacing, or more serious, or to make it seem like it was written by a madman who will actually do what is described. It's hard to know why they did that.