I do actually wonder if part of the reason people start believing ancient aliens type conspiracy bullshit is because they're so divorced from labor they don't understand that a bunch of guys could absolutely quarry a large rock, move it somewhere, and build something with it because that's not actually all that hard or complicated. I've seen people use a simple chisel and hammer to crack boulders the size of houses clean in half, this stuff is a skill that needs to be learned ofc, but the idea that it was impossible for humans to build large, complex, sturdy structures with relatively "primative" tools is so silly I struggle to understand how someone could believe that unless they legit have no idea how labor works.
It's the same beef I have with Fallout. I know they excuse humans being so slow to redevelop society with all "knowledge being lost in the war" but that's just...not how things work. Humans figured out construction and farming very early. There's no way for humans to truly forget how to do this stuff, especially since people survived and could preserve and share what they know. But I just cannot fathom how in 300 years no one's figured out construction or fiber arts or soap making or anything humans have historically figured out super early in the process of being human.
And the only way I can see someone write a world like that is if they either didn't care (fine, it's not real and I get digging the apocalypse vibe) or were so divorced from the process of labor and creation that they actually think those things are way too hard for someone to figure out on their own.
If you think humans couldn't do these things without being taught or helped you have a very warped idea of technological progress and human ingenuity. No one taught humans how to build and create, we figured it out on our own, and it was not just smacking rocks together until something clicked either, ancient humans were just as intelligent as modern ones, they could use logic and reasoning to figure out how to do something new based on what they already know.
Idk it's a theory anyway, but I really do think it's interesting how as a kid I def could believe doing these things is impossible for ancient humans to being an adult who knows things and literally cannot even comprehend believing any of the incredible things ancient humans can do were "impossible" in any way. It wasn't. Humans are incredible, stop underestimating us. And crack open some wiki pages or even youtube tutorials so you get a grasp of how the world works, it's good for you.