Simple
There is a lag from when you reduce deer number until you see habitat improvements and better herd health.
What did you think reduce the deer herd and next year everything is perfect? It took decades to dig the hole. After every great party there is the hang over and clean up. We can thank your generation for running to the law makers any time the GC wanted to pull back on the deer herd. They in turn pulled back the carrot of increased funding via a license increase and the board who has to consider $$$ as well as wwildlife management caved. Rinse, lather repeat.
WV Gino