Guess I look at this way.
Assuming one has shot rifles, X-bows really aren't different where it matters. If one is picking up xbox for the first time ever, it really doesn't take that long. My girls were hitting vitals at the range (20 yards) pretty quick as kids with their compounds.
There is no experience that equates to being in a stand. Learning to sit still, learning the hard way, that grabbing, readying your bow at the wrong time, getting winded perhaps and seeing how they react, walking into the stand and so much more. Nothing will teach a new hunter to grunt to get a buck to stop, nothing will teach a new hunter what it is, to watch a buck come in, get closer, closer….Even if it doesn't actually get within range, or present a good shot.
So much goes in to a successful hunt before the trigger is pulled, and you only experience that in the field. He has time this season to experience buck fever and decide not to pull the trigger vs next year when (if) it hits him and he misses a great buck as a result.
A beginner has time now to get in the stand. If a limit of 20 is set and some time at the range is put in to know you can hit a donut/pie plate out to 20 over and over and over and over and over. how long that takes really depends on have you ever held a rifle before, squeezed a trigger before..But even if not, it shouldn't take too long.
Go, sit in a stand when its cold, get used to keeping movement to a minimum, not get fidgety, bored, not drink too much coffee ( or do have 3 cups and experience that to) and so much more.
If a Buck comes in close
Sooner or later that moment comes for everyone and no amount of range time replaces that and there is absolutely no law that says you have to pull the trigger. But sooner or later every new hunter must.