I reckon there is quite a lot of sh*te written on this subject, from all sides.
If a shoot is "skeet in the trees" you should be scoring high 90s.
Close targets aren't necessarily easy targets, and likewise, not everybody struggles on rangey targets. Once you've grasped the concept of sticking big lead on, they're not necessarily that hard.
I know some iffey shooters, myself included, who can do OK on high and long stuff, and also know one or two AAA shots who don't do so good on these and in fact, are quick to dismiss them as "stupid" targets.
I agree, it's all about consistency, whether they're short, long, high, low, fast or slow. They've all got to be broken.
Consistency is my problem, and I'm the first to admit, I can't seem to crack that one <_<