we have to stop relating this issue to football, it just doesnt work...
sure in this case, as in every sport and life in general, there is a phsical risk to playing, but that should not be a huge issue here. One of these 8-10 year olds COULD get hit by a pitch by this hard throwing, accurate pitcher - just like any soccer player COULD break a leg because he got slide tackled, or a basketball player COULD get elbowed in the jaw/nose and break it, or how i COULD develope carpal tunnel by sitting at a computer all day at work...
There are inherent risks in everything we do, these kids are at the age where they need to learn that. The risk is minimal, but the mental hurdle is large - it's something they need to face.
Plus we're talking about baseball...so what, the kid goes 0-2 with 2 strikeouts, there are other parts of the game that need to be developed - taking grounders, catching fly balls, throwing a ball, running the base paths, learning situations. Plus there's always tomorrow, ok so the nasty pitcher got the better of you today - show up for the next game and give it your best.