Your hole post is taken verbatim - as you should have mentioned - from "Darwinism Refuted", written by Harun Yaha. You should have given a link to this book - or some of his other works, like:
THE HOLOCAUST VIOLENCE,
subtitled: How Did The Nazis Massacre Millions Of Jews, Gypsies And The Disabled?
What Was The Secret Agreement Between Nazism And Radical Zionism?
Frankly, if he distorts the truth here, I'm inclined to be skeptical of his other claims...
If you brought in a smart scientist from another discipline and showed him the meagre evidence we've got he'd surely say, "forget it; there isn't enough to go on.""
Now that is impressive, a quote of a mined quote of a quote.
The original quote was from a paper by Richard Leaker from 1981 where he complains about the paucity of hominid fossils at that time:
Biologists would dearly like to know how modern apes, modern humans and the various ancestral hominids have evolved from a common ancestor. Unfortunately, the fossil record is somewhat incomplete as far as the hominids are concerned, and it is all but blank for the apes. The best we can hope for is that more fossils will be found over the next few years which will fill the present gaps in the evidence.' The author goes on to say: 'David Pilbeam [a well-known expert in human evolution] comments wryly, "If you brought in a smart scientist from another discipline and showed him the meagre evidence we've got he'd surely say, 'forget it: there isn't enough to go on'." (Richard E. Leakey, The Making of Mankind, Michael Joseph Limited, London, 1981, p. 43)
I also suspect that if you find the original quote by David Pilbeam you will find that he was making the same complaint, that the number of fossils at that time were few and that his quote was made several years before mention in Leakey's paper.
The person you are quoting, without attribution I might add, seems to think that Pilbeam's complaint about the lack of fossils means there is no scientific foundation for human evolution, (which Pilbeam did not say) yet fails to mention that neither Pilbeam, nor Leakey doubted the evolution of humans.
I suspect that if you look you will find that there have been a number of hominid fossils found since that time and many of those newer finds include more than just the skulls.