I was just wondering the same thing and also noticed that many posts will have a lot of boosts but little favorites.

I favorite to show that I appreciate the post and maybe increase its algorithm ranking. I boost to allow my followers to see it and maybe other people in my instance. Although I get the feeling sometimes that boosting kind of feels redundant so I try not to boost other boosts unless it’s something that I think I’d absolutely beyond.

Fugazi

Doesn’t track. They didn’t comment in a tone that says that they wouldn’t be triggered