Mott the Hoople
Sweet Jane
I like the way your brain works.
To me, it seems like Haig was basically a war criminal. I do not understand why he was treated as a hero at the time in England, and received so many medals and awards for what amounted to his butchery of an entire generation of British youth.
We have to remember also, that the war actually did lead to outright revulsion and revolts against the aristocracy. Maybe not so much in the UK - but there were leftwing and rightwing riots all over Germany in 1919, and famously the Russian army ultimately refused to follow orders from the Tsar or the provisional government, and the Russian aristocracy faced the full wrath of the Russian people. That said, I am not sure the Bolshehviks would have actually ever succeeded in their coup, if not for the disaster of WW1. Russia undoubtedly would have evolved into either a constitutional monarchy, or a socialist republic. But I am not convinced that totalitarian Leninism was a forgone conclusion absent the incompetence and avarice of Tsar Nicholas, the Russian nobility, or the provisional government.
To be fair if Haig was a war criminal then so was Foch, Falkenhayn, Ludendorf and Hindenburg. So I won't go that far. All of these commanders were far outside their reckoning with their traditional military training that when confronted with modern industrial weaponry that gave a serious advantage to the defensive that they were completely clueless on how to maintain the offensive. Hell, neither did we. Nor could they have continued to have fed men into a merciless meat grinder without the consent of the political class who, in many cases, were moral cowards of the highest order who criticized commanders like Haig for their profligate spilling of blood but who did not have the moral courage to stop it when it was within their power to do so.
I think the most damning criticism of Haig is that he was a competent and very qualified man who had all the requisite training and experience to hold high command. He however proved to be incredibly lacking in imagination and disconnected from the troops he lead and their suffering. Ultimately though he was one of the winning generals, which is what his plaudits are layed upon and hey...winning at war does mean something. But in the end his victory was Phyrric as, you noted, it was the death knell of the British Empire and the end of the Edwardian value system.