Maybe not a "nightmare", but disputes over limited camping spots, NR permits exceeding the legislated 10% of permits cap, and the anecdotal reports of additional leases of private hunting lands because archery hunting permits, thus clients, were a sure thing.
Those are some factors discussed and considered at the time the issue was vetted and consequently resulted in a limited number of permits as opposed to unlimited. Although the NR success rate for drawing was reduced (obviously from 100% to something less) the resident draw success is pretty close to a good bet.
It was unlimited and not an issue for many years ... but the only constant is change and the changes in the Breaks were perceived by many to be unacceptable and problematic, thus the proposal, the vetting, and the shift to limited permits.