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Nature does know what it is doing, but nature also plays on the long end of time. If coyotes are overpopulated in an area as they are mine, and it hurts the deer numbers, I'm not willing to wait 5,10,15,20 or more years to allow the ecosystem to rebalance and deer numbers to eventually come back. North east Texas already doesn't have the deer population that central Texas has.
Deer numbers are up all over the state the past 20-30 years. Do you know for sure coyote numbers are up in your area, or is this your anecdotal evidence? Either way, coyotes have never impacted whitetails so bad as to cause a 20 year imbalance in herds.
I'm not really familiar with NE Texas population, but I know in general there are fewer whitetails there.
I suspect that fact isn't due to coyotes, more likely the habitat can't support high numbers period + NE Texas hunters may be a little more "indiscriminate" with regard to things like season & bag limits. (This last part is a guess)
I would suggest not killing does if you want more deer. That'll have more of an impact on # of deer than killing coyotes. Also make sure the fawns have plenty of good cover to hide. Coyotes don't kill adult deer in any meaningful numbers, and once a fawn is a few months old they can pretty much get away from coyotes no problem.
Regarding coyote numbers, my SWAG theory is that 2020-2021 were generally average to wet in rainfall (Depending upon your area) & 2022 has been a rough drought for most. Coyote populations spiked with rain (more rain=more plants/seeds=more rodents=more coyote food)
Now that the drought is on, there is less vegetation which causes:
*decreased coyote food supply (less rodent food=less rodents )which makes coyotes move more to find food
*increased coyote visibility because less grass/weed/brush cover & they are easier to see.
