LBJ and his domestic agenda, which can be seen as inevitable if you read of his childhood and his jobs as a teacher, is now ignored because of VN. I believe the stories of a deep depression, ( which can invisible to those around him...including family).
If you listen to the LBJ tapes, in a conversation with Robert McNamara in 1966 LBJ tells McNamara why the US couldn't win a traditional 'victory'. The conversation is burned into my brain. I could offer it word for word but I don't know that many would be interested. They've made their judgement. More details won't change their minds.
I fought that war as hard as anyone. I left a little blood on the streets. I didn't hate LBJ. I hated the war. I didn't understand how mired he was , with a traditional background and viewpoint, in a nearly impossible situation. In his mind 'losing' (withdrawal) simply wasn't an a viable option. It was only after I read his autobiography and many more histories that I began to see the whole man. He must have been tortured by an impossible situation in VN but pushing a progressive agenda at home.
Ironically, it took seven years for the US to withdraw. The end of the US involvment was frantic and disorganized. It was seven more years to end the war.
I wonder what LBJ would say about that and the 45 years since.
BTW: To really understand the pressure LBJ was under watch the "Fog of War". McNamara's honest words are...well I'll leave to the people willing to dig it out to form their opinions. The conversation I referenced above is in that interview.