There may not be a ton of birds with greater than 1.25" Spurs, however there's a ton of dominant birds that die the first week of the season when lured away by a strutter decoy. I'd bet 70% of the birds killed the first week are field birds with decoys.
What are the impacts of removing the primary breeders before they have a chance to breed? Are the subordinate birds able to pick up the slack or are they so beaten down they won't go near hens even when he's gone.
This is why I say the single most impactful thing that could help the population is get rid of the dang decoys. Look at Alabama, they legalized them and their population has been on a steady decline since.
Any hunter can stake out a decoy in a field and when the dominant bird sees it, he runs in a dies. Explain how this is good for the population?