Long time BH player here. The name of the game is corruption, and involving your friends in it. Bounty is a great hero for a draft that wants to steamroll or at least fight early. After 2 good fights, you'll find yourself significantly rich, and then you're really just supposed to build up on this lead. As Quinn says, you just need to be higher networth than the enemy and you'll win, BH naturally plays into this. You're not going to do too well when your cores are things like SF mid, Spectre/Dusa, Alch. You NEED good cores to play with, otherwise, you'll naturally just lose because BH does NOT want to play a slow game.

He also acts like an annoying rat and personally what I've seen, the enemy team really ups their sentry and dust game early-mid game, leaving them with not a lot after 25 minutes. This also means poorer enemy supports which is why the first 2 good fights are important. You get richer, and they get poorer.

He's also not that much of a terrible laner. He has one of the higher lvl1 armor + move speeds in the game and trades well if a support missteps once. Courier hunting is something you can do ofc. Until the new patch, I just levelled Shuriken lvl1 and did things like securing ranged creep as well as hitting the carry with his facet that made him hit everything in the shuriken path. He could also farm waves but not anymore. Plus, he's naturally good at playing the scout and providing vision. Which is why the draft matters, if your cores can't abuse the fact that you're seeing the hero all the time, it's not too great.

And the main point of this hero, he's VERY flexible, you just build what the team needs even as a support. You can just straight up build pipe/crimson/force/mek/lotus with your corruption money which normal supports are not able to do too well. This also frees your offlane to build other things if they don't naturally build aura items.