No, its about Biden becoming Hubert Humphrey.
No. This tweet is a different argument entirely.
But sure, let's draw the Humphrey parallel.
As you know, Nixon sabotaged the peace talks Humphrey was working on and then escalated the war in Vietnam, keeping the US there for years longer than it would have.
And, more crucially, Humphrey lost primarily because he supported civil rights and Wallace and the South defected third party.
(Wallace's position on Vietnam is interesting.)
Nixon
did run a lot on "see how the kids are out of control, we need law and order" though and it was very effective.
After all, most of the population approved of the police actions against the protesters.
Did Humphrey's position on the war hurt him?
Of course.
Especially how he got the nomination when there was a candidate with a different policy running.
There are definitely parallels, sure.
But - like most analogies - it's complicated.