Sure they could have been faked. You can fake a lot of things with enough effort. Do I think they were? No. I grew up in a technical household, and I remember my dad listening to astronauts talk back and forth to mission control on a radio in our laundry room. (Can't remember if it was his HAM radio or one he had from being in the Army...
) I've visited the NASA Space Center in Florida, I used to obsessively study the technology when being an astronaut was my big dream. Like Nelie, I've seen the things that we have accomplished over the years and I have no doubt that we landed on the moon.
There are also people that don't believe in the Holocaust. I just don't understand either mindset.