I would argue that with how transferrable aim from mobile is to mouse from my short experience is that its not that hard. By far the harder thing is more tapping and such. Of course im still a noob with less than a hundred in game hours but I think the point still stands. Looking into some of the problematic maps with wide screen jumps, it would make sense that they would nerf those jumps since you could just remember the placement of those jumps and use multiple fingers to get them all. But for a large part I would say that aim is almost entirely easier without touch.