It looks fine to me.
I think the background of the landscape makes it look like the level of the ground is higher than it is.
If you look carefully at the way the rappel line is flowing, you can tell that the level of the ground that they are rappelling down to is actually quite a bit lower than you think, and is only barely in frame with the bottom of the picture.
If the helicopter were a handful of meters lower I wouldn't like to jump down, because chances are at that height it'll be more than enough to break both my legs.
As for rappeling, I'm also not sure what the big deal is. You need to train to rappel, and they're doing it, and the height they're doing it at seems reasonable.
Everything looks in order to me.
No worries, I wasn't thinking that ground level was the tree line on the knoll in the back. If you follow the rope to where it actually goes into the scrub - Chopper is in a hover less than 10m actual.
Slight stretch on my part about the handful of meters but it's close enough. Highest I've jumped out of a helo (onto land) is about 3+m (~10 ft). PLF comes in useful.
Seriously, if it's rappel training, for all the effort to get the helo there, do it high or else fast rope already. Considering fuel burn, max out your guys on rope. It takes a ton of time for one guy to descend, get off rope, clear out and for the next guy to clip on and step out.
The progression for rappel training is to go from a tower to what you see in the picture above, max ropes out a 100ft altitude with safety belayers. Then you proceed to operational insertion - no safety, possibly rope bags, night, etc.
Nothing like the original posted pic.
Anyway, will love to have some context for what is happening in that pic but otherwise, I'll leave it here and we'll agree to disagree.