comment: The idea of this move is to counter d2-d4 with d7-d5, but the knight isn't well-placed on b6, as it closes in the light-squared bishop.
context: 1. e2e4 Usually a good move, normal chess or freestyle. 1... e7e5  2. b2b3 Freeing the path for the bishops is an important strategy to guide you in the openings of freestyle. Here, however, this isn't the most accurate. 2... b8c6  3. c2c3 Preparing to control the center with d2-d4.