Like, say, Half-Life 2? Or Portal? Or Left 4 Dead? Which have super smooth, fluid and intuitive control schemes that set the standard still used in first-person shooters to this very day?
It's meant to mimic those Source games?
Okay, maybe you're talking about something more cryptic like EYE Divine Cybermancy. TBF, in EYE, in order to select a weapon you do have to press its numkey... once. Or use the scroll wheel.
And in order to use an object you have to... press the use key without needing to fiddle with a menu. Granted if you want to hack something you DO need to use the quick menu and select the 'hack' option, but it only comes up when you manually activate that menu to not make just using an object clunky, since you'll be doing that all the time.
Unless Voices of the Void has hacking, it doesn't need such a menu. (Even if it does it could be handled with a 'hacking device' item or a hack button in the computer UI like in Deus Ex or what have you.) And since you'll be picking up and using items all the time in this game, why shouldn't that action be quick and fluid?