True...the ancient site that was once Troy, has been misdated and continues to be; mostly due to 2 reasons 1)many things were destroyed when Schliemann was digging and he really didn't dig deep enough 2) there really hasn't been much of a follow through, there, since carbon dating was invented.
We'll NEVER really know what the racial diversity really was in Ancient Eygpt, for different reasons; however, as a place that saw quite a few wars and upheavals, as well as it beginning as two separate and distinct sections, prior to the joining of Upper and Lower Egypt, and peoples coming and going ( some as salves from battles won, others as conquerors, and others as immigrants ),it's just guesswork now.
I HATE THE DAMNED BBC AND IT'S MARXIST PC CRAP!
Schliemann dug up the citadel of Troy, but destroyed most of the site, including a lot of the revealing data in the various occupation strata. But until he dug there, the Trojan War story had dwindled into a work of fiction in the minds of most scholars.
It isn't just Troy, either -- a French archaeologist excavated the Temple of Delphi over a century ago, and wrote that there was zero evidence of any kind that the ancient descriptions of the temple interior were correct. Then, late in the 20th century, a geologist invited in by the Greek gubmint mapped not one, but two fault lines, and they cross right under where the pythia sat and prophesied. Further research showed that there had been a gas seeping from the cracks in the floor that caused a "high".
One of the things that bothered Schliemann was the small size of his Troy, but the current modern dig at the site has uncovered the rest of the ancient city, spread out around the citadel. Schliemann didn't find it because he never looked for it. He was a pioneer, and a smart guy, an autodidact, but he had his faults as we all do. :^)