hitscan in bl is probably disliked since the kinds of lag people usually see in bl is a lot more jumpy or high compared to games like tf2, and since the hitscan is conducted server side the hitscan shots themselves are delayed and so players with less lag then have a huge advantage over other players
projectile weapons makes this game unique imo compared to most other combat games and makes fighting scenes/videos look interesting as well. they work well with blockland's style even if they aren't particularly modern or realisic.
anyways, hitscan rl is an incredibly bad idea and hitscan default weapons would probably be op as hell