I'm of the philosophy that games shouldn't encourage players to mash buttons. It's bad on player's hands and has all sorts of issues when it comes to accessibility. That said, I had the idea that when you mash, your accuracy should go down. I figured it would be a fun way to discourage mashing while also adding some secret tech for clever players.
See, with this specific weapon, it's alt attack (the Big Shot I posted earlier) has a longer cooldown than the main attack but it uses the same timer. So you can "cancel" the timer by pressing the other attack button. It's something that I don't think most players would notice, but advanced players could take advantage of.