Pre-aiming hitscan is an ancient workaround by players for bad networking. Lag compensation fixes that. This basic problem has been overcome long time ago and is not present anymore in “most games”. Pre-aiming projectiles is a basic fps weapon mechanic but has nothing to do with networking. However, it might be influenced by the networking logic by e.g. by increasing or decreasing a delay after shooting to compensate for certain ping values. This depends on the engine the game implements.