Well, I wonder what sort of childhood you had which led you to conclude Santy was an Alien. Although I could see how this whole Christmas thing would make an excellent cover. Santa was born at a time when people did not have internet or flying machines to get to the bottom of things. So you could say people had to accept the story or be labeled scrooges trying to get out of buying presents to help Santa out. By the way, perhaps the goverment was all too willing to let Aliens promote this story because those in the know were scared of the Aliens and buying presents was good for the economy.
But we have not only pictures, drawings and paintings from actual sightings centuries ago, plus we had video evidence from the last century. And there are Reindeer.
Most everyone has seen the video evidence which is clearly not faked.
Valley Clause sounds plausible although I have not actually seen him.
We do know you are from Michigan where much nuclear waste is dumped.