HA! thats funny, most spotters I have used didnt know where the plane was when I asked, just to test them.....ahhhhh just a minute I was looking at a Bald Eagle....the cloud looked like a pony....sorry I was looking at your cattle.
does your spotter know how far by sight your going to run out of range? its real easy to fly and become so immersed you fly out of radio range
dont buy into RTH, but think of how many guys want or already use a plug and play flight controller for that OH $hite button...what you maybe miss is ..think of RTH as an OH $hite button... its easier to get disoriented from the FPV view for newbies than LOS and people still crash their stuff LOS, that safety net is reassuring with $500-1000 worth expensive quality longe range and FPV equipment we have in our aircraft....
some people dont want to crash their $100 plane....... so for some $40 for FC with RTH an OH $hite button if you will, is cheap insurance and the flight controllers have many other useful features..
so its good that you brought up you dont buy into it because now some newer members will have a different outlook at the return to home feature as long as your a couple mistakes high enough the FC will get you out of trouble when your disoriented the plane is upside down going the wrong way maybe you dont really know......flick a switch it will fly back to you and circle overhead till your composed again....cheap insurance for $40