This is from the various services trying to talk to each other in ways they weren’t originally designed to do, really. Our “upvote” is a mastodon “favorite” (like) while our “boost” is functionally a retweet/reblog. Kbin tries to bridge the gap between threaded content and microblogging, and it gets about 90% of the way there; all it really needs to do is change it so that upvotes are the ones that contribute to reputation instead of boosts, which are functionally useless outside a fully microblog-style environment.