From what i have seen the level of skill is no higher than the general spread at a normal club.
You've got the ones who can't take off straight, those who can't do a proper circuit, those that can't land on the strip, those that can't do an approach without porposing, those that are worried about a flame out, those that just can't flare for landing. Just the same as a normal club.
I am surprised that some even take off with their expensive jets knowing how bad they are at landing them. They must have big wallets or big balls.

I have found most jets to fly very well. However considering that they are nearly all ARF and if they had bad traits you would find out about them on here soon. That company would then not sell any of those jets anymore. Pretty much ensures they will not have any bad habits like snapping or tipstalling. People would go off the rails with the price of the fuselage if they weren't well designed.
As far as complex? I mean a turbine is not all that complex, you don't even have to tune a jet, a jetcat is easier to start than an OS46AX.

So as far as flying goes about the same level as flying and landing a Viper pylon racer.
The main reason everyone won't fly RC jets is not ability but more likely just the cost.

I've made the jump and to be honest they are just and easy and just as relaxing to fly as a 46 size prop plane, if fact probably more so due to the fact that you generally put good equipment in them and therefore they operate reliably. Kero start for instance means engine starting is a doodle. I like to compare the throttle lag to the lag of a poorly tuned glow motor. You screw up on approach and go for the gas and have to wait for it to come on. If you stay level, there is no issue, if you oanic and pull up without airspeed your in trouble with both aircraft. It really is a non-event.

So yes I agree with you. not really that difficult and the guys that do IMAC and Pattern before hand will always be good at what ever they do.
Get out there and fly jets.