Industry insiders cannot always be relied on to dictate good policy. I won't profess to know more about ag, but I know that in any industry insiders can get too close to a problem and lose the big picture. Ag's totally insatiable appetite for water strikes me as one example, and disregard for long term pollinator health strikes me as another.
The point being, you don't have to be a farmer or rancher to have valid concerns, and the outcome affects all of us so we all have a stake.