The biggest issue I see is more physical than mental. The bottom line is that quite often, a young kid’s wrist lacks the strength to create leverage for multiple casts, plus their wrist lacks the necessary rigidity to hold a big fish during a fight until that 10- to 12-year-old range. If you ever want to test this, drop bait rigs on baitcasters below a boat while saltwater fishing, or have your child reel in a few catfish with a baitcaster. I’ll bet you a whisker that they’re asking for a spinning rod in no time. I know because I’m currently going through this with my 9-year-old. Kids this age tend to hold the reel the wrong way, not use the other hand when they should, and they just seem to struggle with gripping the whole setup, because it’s technically designed for adult hands.