I think it means there are more involved and it's a lot deeper than we realize. Member the nazi world order? I read a book 20 years ago that was similar to the lizardmen theory but it was Ork like creatures who could look him a(similar to they live but not aliens) they lived alongside humans but we're trying to destroy us. Every time humanity developed to a certain point the orks would go around destroying everything. The plot revolves around a boy who can see them and finds out that many humans work for them and they built bunkers to escape the nuclear war they were about to engineer to finally get rid of humanity. Cant member anymore than that
Kek truth is stranger than fiction. I did look to see if anyone knew the title but had no success