Balance would be nice, yes, but I think the conservative approach is closer to correct, especially given the natural human bias toward believing sensational theories.
The problem is that you get a vastly distorted picture because of different survivorship rates of artifacts. In the Stone Age people used mostly wood tools but stone tools didn’t rot away.
What is more sensational:
a, you can drill a hole and cut a 100 ton stone block with a chisel
b, you create a hole with a drill, you use some for of stone cutting technology that supports cutting 100 ton stone blocks?
That's an interesting thought. I wonder if you can quantify this belief? That Weibull (presumably) distribution would be an interesting and useful thing to know.
Maybe not closer to correct, but definitely less likely to admit errors. But sometimes the negative space around a particular thing becomes overwhelming. To me this is like circumstantial evidence—in general it’s weaker than physical evidence, but in high enough numbers it can serve.