Would you feel the same way if the coach explained to you that 2B is - in the coach's opinion - the most important IF position on the field, and your kid is playing there because she is the best fielder on the team?Kids should be playing multiple positions..that said if I thought my kid had a future at SS at the higher levels and was placed at 2B because that was going to be
the best way to win in 10U rec I am not sure I would be pleased.
With the exception of maybe P and C, what position a kid plays in 10U (especially rec) will have very little impact on what position they are playing in 14U and later. Even then, my DD's 14U TB team has 2 players that were Ps in 12U and younger, but don't pitch at all now. 2 others used to play C as their primary position in 10U. My DD's first season of 10U TB , she played every position on the field (except P) at some point.
Also, you can bet that a whole lot of college OFs were the best SS on their travel and/or school team at some point.