Oh ok, then yeah, those are legitimate concerns and people have mentioned them earlier. I guess some people like myself just like it enough to get past those things.
I haven't written a tips article yet (and I'm hardly an expert) but there are some things people have mentioned to make the iffy controls more tolerable. For starters:
1. Always tap where you want Maxwell to go, don't try to drag him or anything. To jump on a ledge, tap above the ledge.
2. Don't try to click on anything right on top of Maxwell, you'll probably get him. Move to one side first.
3. If you're in a vehicle, be careful not to tap the body of the vehicle unless you're ready for Maxwell to drop out.
4. If you're having trouble dragging (especially moving) animals or people, try aiming at their feet or a tiny bit below.
5. If you tap right on something, Maxwell will often run to use it. So either aim carefully and drag, or tap in the case of selectable/targetable items.
6. If Maxwell or other creatures are giving you a lot of trouble by moving around, try using a "wall" or "elevator". A wall will keep him still, and an elevator will keep him locked in one spot until you touch the elevator again.
CAMERA:
If you're examining an area, or watching a fight, hit select or tap the identify icon so the camera will freeze in that area. If you're moving things around in that area, train yourself to either hold that direction control, or occasionally tap one of the directions a tiny bit just to refresh the camera. You only have to do it every few seconds, and it becomes somewhat natural.
I'm not trying to excuse controls, but I think tips like this can make the game less frustrating.

Hopefully some of them are useful.