I'm sorry to be a spoilsport, but this is incorrect. I think the problem is that he has very little understanding of the complexity of archaeology. He is often failing to take into consideration the taphonomic processes at work, and lacks any real understanding of stratigraphy despite it being the factor he cites most as 'proof'. Some of his evidence does stand up however, but it isn't controversial. We are always pushing back the date of occupation as new discoveries crop up, particularly in the america's as the methodologies used in archaeological investigation in this area of the world have up until recently left a lot to be desired. However, claiming to have looked at every archaeological find ever made in 8 years.. well I can't begin to tell you just how impossible and ridiculous that is. Certainly it would NOT be a proper research study.
But don't lose hope! As I say, the record is always expanding - and remember that we can't really be too definate about things given that we will never have evidence of all that has existed. There is a very funny theory book about this entitled "Why Archaeologists Drink". Archaeologists may sometimes be incompetent, we may be always discovering problems with our methodology and improving it. However, what we are not doing is actively suppressing anything - you have my word as an archaeologist
If anatomically or behaviourially modern humans existed millions of years ago, then we have no evidence for it so far.