With the new ability to follow hashtags, users will have a new way to scroll through their usual feed and potentially land on your content. Your posts have the capability to show up automatically in the feeds of potential new followers
Instagram has aways preferred the use of specific hashtags making this new feature a pretty big deal.
When a user follows a hashtag the suggested posts will start to appear in their feed. If they decide they no longer want to see this content they will also have the ability to reject a hashtag from their filter by selecting "Don't Show for This Hashtag".
This information will tell the user's unique algorithm to sort out the kind of content this particular person enjoys. If multiple posts from one profile are flagged in this way the content will be flagged. In turn this will effect the rest of your content in a negative way.