The quoted cases are isolated. Many are not actually by the Taliban, but by allied forces e.g. the Haqqani network. Remember the Taliban have been at war for decades, first against the Soviets the against the US. I am sure you can pull out occasional atrocities. What you cannot do is show that there is systematic mass rapes of whole populations and genocidal murder such as happened e.g. in ex-Yugoslavia.
Please find any examples of he Taliban arguing for rape and murder of children. It certainly is not justified from a religious argument. The Taliban actually have a tip line where they ask people to anonymously report abuse by their military. In reality the Taliban have little control over the local militias and none over the Haqqani network which are the most powerful military group.
That they are sexist is true. But that is not unique to Islam, Christian and Jewish sects can be very sexist. Jewish ritual cleanliness rules and rules of modesty requiring women to cover their hair etc. are similar to 'orthodox' Islamists like the Taliban.
I wonder if you are confusing the Taliban with IS? Certainly mass murder and sexual slavery were a feature of IS activity in Iraq / Syria before Iranian forces defeated them. It is certainly true they did create a religious justification for sexual slavery. The Taliban have never made a similar case.
One thing I think that will make the Taliban different from twenty years ago was that then they were predominantly people coming out of a rural tribal background with very traditional views. Since then the senior Taliban leaders have been in exile, living in a more cosmopolitan Islamic nation. They will have interacted with a broader range of scholars than when they were based in AfPak. An example of their change is that they are quite accommodating of Shia groups, appointed a senior Shia cleric as governor of a predominantly Shia district and have condemned attacks on Shia by ISIS.