The only way to get past the stuff you describe is for a person to sort of mentally clear out anything they think they “know” and then re-read a bunch of research threads.
Then the light goes on.
I am reminded of the woman who lost an earring...she was searching for it in the living room, and when her husband asked her ‘where did you last know you had it’? - she replied, ‘I think it was in the bathroom’
‘So why are you not looking in the bathroom’? he asked her.
‘Because the light is better here,’ she replied.
The light is better in Frank Marshall Davis’ living room.