I'm sorry but you are wrong on every account. You do not let your proxies run around with Turkish flags committing blatant massacres. You do not understand why proxy warfare exists, it is to offload your dirty work on deniable goons who can keep your country and brethren safe and advance your interests while keeping good and clean PR. Not only has Turkey abysmally failed at hiding these connections seeing as how every cretin on the planet and his mother knows about these jihadist proxies but they are not even defending Turkey's interests anymore. TAF is essentially babysitting extremists who are now pursuing their own interests above all else and throwing our own under the bus for these assholes.There are no perfect proxies and especially in a region like Syria. If you want to be successful in the operation and go within the international law there is no way around. The fails are purely sourced at the Turkish security and foreign policy in Syria and it is not connected to the proxies in any way. These same proxies died with thousands for securing not only their but also our interests and they are not better or worst than any other non-government actor in Syria.
The problem here is not the proxies but the lack of clear structure and the low level of the propaganda system. People here are tiring their brains with philosophies that are of no importance in the big picture like who beheaded who and if someone is stealing or not. Those matters are the matters of the Turkish security forces to sort out and not you.
This is called unconventional warfare and if the nation is not ready for it better close the borders totally and isolate itself from the whole region leaving behind all the national interests of Turkey all around the globe. Like it or not this is how the modern warfare is conducted and there is absolutely no better alternative. I don't want to enter in details about the possible alternatives because I will do more bad than good.
The powerful countries from all around the world are securing their interests with groups like these from decades with different types of groups and their ideologies. Big countries used Jihadists, Marxists, Ultra-Nationalists, Coupists and every kind of human scum that you can imagine. In order to minimize the legal consequences countries are forced to do this. The reality of survival on the ground is based on actions like smuggling. The bare minimum for survival of an isolated entity is based on smuggling. We are talking about civil war here. The brave knights on white horses are fairy tales for the CNN, Sputnik and TRT audience. Like it or not this will continue to be like that and unconventional warfare will be the priority for the special forces and intelligence agencies of many big countries including Turkey to infinity and that kind of warfare will outlive us all and we will see probably many more controversial things in our lives. Better understand this as fast as you can and move on. Those things are wrong on many levels but this is how things work. We better focus on something we can change because this we will not be able to change for certain. Tomorrow someone could even come up with such a group with a banner showing Ataturk's face on it. Will it impress me or surprise me? Absolutely not! The methods will stay the same but the flag will be slightly different.
The things that must and can be improved are better structure layouts and propaganda but with time and experience these will be perfected also.
You can call whataboutism with Western nations using proxies all you like but the difference remains, they know how to reel them in and paint a good image. They also know how to cut loose proxies who are harming interests more than they are helping. An example of this are the rabble that eventually turned into ISIS, they were initially funded by and implanted within rebel ranks by NATO and the USA to overthrow Assad but once they morphed into an even bigger issue, they were dropped like a hot potato and all other nations washed their hands clean of them. They didn't just try to present increasingly more retarded propaganda to whitewash them. Turkish forces, frustratingly enough, still haven't learned that lesson and are excusing the actions of violent morons that should've been eliminated from the ranks years ago.