Do you follow someone on Mastodon who does great posts but not-so-great boosts? Or maybe they boost too much?
You can mute just their boosts if you like:
1. Go to their profile
2. Click on "..."
3. Select "Hide boosts from"
This will not affect their own posts, which you will see as normal.
P.S. If you're new here, boosts are the equivalent of retweets or shares 🔁