The fact is modern people is still not able to build the great pyramid of Giza with such precision and within proposed timeline.
And it’s not just the pyramid but there are simple things such as a block of granite, like the unfinished obelisk, weighting 1200 tons. The strongest mobile crane in the world that could operate on sand would still struggle immensely when trying to lift that, moving it few hundred meters would be demanding project. But they say these blocks came from hundreds of miles away, across Nile and over some mountain. We do not have capability to do that today. Not even close. But don’t believe me but do some research on your own.