Stating it was a dumb decision for Wilder to play Rb at FSU is truly open for debate considering how much he meant to FSU in 2013. The fact that he was drafted as rb in the NFL for 3 years shows that the NFL also drafted the 5 star rb for Rivals for that purpose.
https://floridastate.rivals.com/commitments/football/2011
The fact that he wishes to now try to remain in the NFL by playing LB is also another good decision. A dumb decision would be one like Tim Tebow refusing to go to another position who is now out of the NFL for good. IMO
Wilder was an excellent leader that was a valued contributor to FSU's 14-0 NC season. Suggesting that he shouldn't have been a rb for FSU seems very silly and nonsensical. JMO
Suggesting that he would have been a greater LB at FSU is pure speculation based on the facts so far. Now if he turns in a All Pro LB then the experts on the board can make their case of him making a mistake. Hope he does because I wish the best for James.