Good points Bob,
Basic shooting competition, such as PPC and/or practical, is just that, basic. It helps develop some techniques and habits that are almost universal - balanced stance, sight usage, firing for accuracy, firing at speed, shooting weak-hand, reloading, use of cover, some different basic positions, shooting at multiple targets, shooting on the move.
What few of them do is teach flexibility, problem solving or special tactics in unusal situations.
But the basic shooting skills are necessary in every form of either competition or combat. Keeping those skills sharp will save your bacon.
My instructor, during the days of PPC qualifiers, was a former FBI agent. He was teamed with a partner once who was one of the best shots in the agency. One afternoon they went to the range to brush up and he was impressed. His partner put 6/6 right in the x-ring at 25 yards with a 2.5" Model 19 in about 5 seconds. But it took him 18 seconds to reload!
He confessed to Vic that one of the reasons he was such a good shot was that he was lousy at reloading. He was also a southpaw which complicated matters somewhat. After a few months of practice and Vic's tutelage, he was able to reload in 7 seconds (from belt loops - there were no speed loaders then).
If you don't have the basic skills down, you need to work to improve them. And in the basic skills category, I include point-shooting along with weak-hand and shooting on the move.
When the elephant looms large, your reactions should be instant and automatic so that your brain is solving THE problem of the moment. That problem might be as simple as remembering where the nearest cover is. Or it could be a complex 3D moving approximation of how much to lead your moving target as he tries to run to you, or away, in an uneven "S" curve. But your reflexes have brought the gun up to bear properly, disengaged any safety and your finger has eased onto the trigger without conscious thought.