The way you know the manned moon landings happened is by the many ham radio operators internationally who had dishes they pointed in the right direction.
Those things have beamwidths of a degree. Or less. Nothing off to the side gets heard. There are thousands of these guys who heard the show personally, without involvement of NBC, ABC or CBS. Or BBC. Or anyone else. This does not mean every ham had a dish like that. Thousands did. Globally.
Grissom died a year before the Moon landing ... your tinfoil hat needs upgrading.
Before Apollo 1's planned launch on February 21, 1967, the Command Module interior caught fire and burned on January 27, 1967, during a pre-launch test on Launch Pad 34 at Cape Kennedy ... The Apollo spacecraft problems were corrected, with Apollo 7, commanded by Wally Schirra, launched on October 11, 1968, more than a year after the Apollo 1 accident - wiki
Where do you get this stuff, do you just make int up on the fly?