I like the overal effect but it’s hiding the true nature of boosting.

Boosting shares a piece of content with your followers. Favouriting does not. Kbin does not yet contain a follower feed, but it is planned. This is what that looks like on Mastodon:

Sadly, until federation is working, it may as well not exist.

That said, when it does start working I look forward to the battle of the f1 communities.