Which point is a bogus non-sequitur?
This: "If Oswald does not get a job at the TSBD, President Kennedy leaves Dallas alive."
The conspiracy books (written by authors) exist and there are numerous "prominent pundits": Michael T. Griffiths is one.
Well, if Michael T. Griffith [not Griffiths] starts posting here, you can argue with him about it.
What is your evidence that "most of the conspiracy books posit Lee Harvey Oswald as being placed in the TSBD as an employee by conspirators"?
I never said JFK "had to be killed" at 12:30 PM CST on November 22, 1963 or not at all.
See above. You think the only way that JFK could have been killed in Dallas is by LHO from the TSBD.
There is zero evidence for an assassination plot after 22 November 1963 if JFK had not been killed by Lee Harvey Oswald. If you know of one or more--please provide details.
There is evidence, none of it very good. For example, James Files, E. Howard Hunt, Loran Hall, William Seymour, Gerry Patrick Hemming, Ralph Yates, etc, etc, etc.
Just like there is not very good evidence against Oswald. You keep special-pleading your own claims as winning by default.