So much so that there's a book for pilots exactly about that topic, "The Killing Zone".
"This survival guide for new pilots identifies the pitfalls waiting inside the killing zone, the period from 50 to 350 flight hours when they leave their instructors behind and fly as pilot in command for the first time. Although they're privately certified, many of these unseasoned aviators are unaware of the potential accidents that lie ahead while trying to build decision-making skills on their own -- many times falling victim to inexperience."
I've seen exactly the same phenomenon in racing/track day driving. Most of the crashes I've seen happen in that period between when someone has enough skill/experience to go fast, but not enough to recover from bad situations at speed. So a lot of big crashes happen in the intermediate to newly-minted advanced drivers.
"This survival guide for new pilots identifies the pitfalls waiting inside the killing zone, the period from 50 to 350 flight hours when they leave their instructors behind and fly as pilot in command for the first time. Although they're privately certified, many of these unseasoned aviators are unaware of the potential accidents that lie ahead while trying to build decision-making skills on their own -- many times falling victim to inexperience."