However, aren't they overlooking the obvious? Compare the Easter Island statue with a traditional statue of a begging Buddhist monk of Southeast Asia ...
Both the Easter Island statue and the Buddhist monk have topknots.
Both the Easter Island statue and the Buddhist monk are staring stonily ahead.
Both the Easter Island statue and the Buddhist monk have long ears.
Both the Easter Island statue and the Buddhist monk are holding something. The monk is holding a begging bowl. What is the Easter Island statue holding? His penis?
Take a closer look at a photo of another Easter Island statue, in which the thing being held is clearer ...
It's a bowl, isn't it?
The Easter Island statues are begging Buddhist monks.
Not aliens.
Undoubtedly, the religion of the Easter Island "long ears," long recognized by the locals as a separate cultural group, was Buddhism. While they forgot their religion -- descendants of the "long ears" still live on the island -- they preserved the memory of their symbol for their faith, the monks with begging bowls.
Additionally, it didn't take aliens with rock-dissolving particle beams and anti-gravity levitators to make them and put them in place.
Scientist / explorer Thor Heyerdahl, whom the natives called "Senior Kon-Tiki," during his months as a resident there researching the history and archaeology of the culture, simply asked the natives to make him a statue.
They readily complied, chiseling the statue out of the cliffs there in a Stone Age fashion, with stone tools, in a few weeks, only ...
From "Aku-Aku," by Thor Heyerdahl
George Allen & Unwin, Ltd., 1958
The book is still highly readable.
Hunt it down, buy it and give it a read.
Other researchers appear to have deduced what the natives meant when they said that the statues "walked" to the sites of final placement. The bottom ends were carefully shaped so that when the statues were rocked left and right with ropes, the statues pivoted forward down the path ...
Finally, when it was time to raise the statue up and slide it into the hole in the ground which supported it, instead of anti-gravity levitators supplied by aliens the natives took logs out of hiding and used them as levers to pry-up the end of the statue farthest from the hole, and shove dirt, pebbles and stones under it until the incline was steep enough for gravity to take over ...
So, when the folks who produce the "Ancient Aliens" series on cable TV include images of the Easter Island statues, what they do not reveal is that the statues are evidence against their basic premise.