A lot of our History is wrong. The problem lies with Academia. History academics refuse to accept anything that may alter what they have studied for years. The exact opposite of Science. With Science you are constantly trying to disprove theories and come up with your own. Egyptoligists are the worst. There is mounting evidence that their dates are all wrong but they simply refuse to change.
If the evidence is changing enough that you call it "mounting", then it hasn't yet reached a standard that even you would be ready to call 'proof'. Science describes what
is, and its proofs can be demonstrated and repeated. Even so, scientists still sometimes misunderstand, misinterpret and get things wrong, or argue and resist altering what they have studied for years. But at least they can hope that when they agree, they've got a Law.
History is story-telling. Stories about what
was but is no longer. Each single thing that has survived, and still
'is', must be interpreted by individuals, each piecing together their own story from the different assemblies of fragmentary evidence they know. Of course arriving at a common story will have 'progressives' looking to disprove earlier stories and come up with their own and 'conservatives' who refuse to accept anything that may alter the story they knew of old. For historians, there can never be the certainty of science, because every story is always changed by the telling.