In certain cases, killing does can help the harvest of bucks. If the deer have eaten themselves into a carrying capacity, the does will stop having twins and triplets and only have single young. Coupled with an over-harvest of bucks, you have a buck:doe ratio of 10:90 or worse with most of the bucks getting killed before they're old.
If your 90 does each have one fawn and 40 of them are bucks, you can see how having a buck:doe ratio of 40:60 with each doe having twins, ends up with more bucks coming into the herd which ends up with more bucks being able to be harvested.
Look at San Diego: 1000 either sex archery tags, 300 antlerless rifle tags, and 80 ML either sex tags. San Diego has one of the best buck success rates in Southern California. Buck success rates by % of tags in San Diego are commonly 2.5 times better than their neighbor to the north, Riverside County and they give out more tags in San Diego to the tune of 4 digits. There's more reasons for that than just doe tags, but the several hundred doe that are being killed every year in San Diego do not seem to be hurting the buck success rate.
That doe rifle tag and ML tag are also not drawable on a 2nd choice so that's 380 guys that are coming out of the point race every year they draw it.
I'd support limited doe tags as a LE hunt in the A, B, and D zones as long as it was accompanied by a cut to buck tags in every zone that held a doe hunt.