LBJ's mistress does have at least one youtube interview of great length posted. She does make those assertions rather emphatically and convincingly. That much is certain. One can choose to believe her or not. But that's the evidence.
I don't think your narrow, rigid, hostile constructions on reality help dialogue a bit.
A woman on You Tube making claims about something that happened 55 years ago is as believable the the claims made by the Kavanaugh accuser.
Too late to be taken seriously——anyone can say anything about anyone.
Frightening.
.