And because teams keep making the same errors over and over again, does not validate a thing.
There is little to suggest that teams spending vast amounts of real money and draft capital on DBs pays off in wins and titles.
Talk about a lack of basis in reality, look beyond Seattle and you will see a collection of teams in the last five years who have somehow survived in a passing league without paying disproportionate dollars out to their secondary.
It is not about "importance" of the position.
It is about the idea that like a lot of other positions, it means you better be good or lucky in evaluation. Plain and simple.
Save QB, it is perhaps the hardest position to evaluate and the clueless would rather throw resources at it than try to figure out where the evaluation process is missing.
Some teams know how to evaluate the secondary and don't have to spend top free agent dollars and a first round choice to do it.