Ignorance
[ig-ner-uh ns]
noun
1. the state or fact of being ignorant; lack of knowledge, learning, information, etc.
Since you have zero knowledge of the actual draft grades that teams put on a player, since you were not at the combine, did not scout the players, etc... you are in a state of being ignorant.
It absolutely is an ignorant opinion. Not one person outside of an NFL war room has any idea how the teams actually graded the players. Every opinion any of us have is based on blogs, mock drafts, and people who also have no idea what the teams actually graded a player.
Sorry bud, but the opinion that the pick is a reach is an ignorant opinion by the definition of the term.