some things are more clear but writings are the easiest to falsify.
the rewriting history thing has been understood for a long time, and it has a terrible effect on cultures, potentially uprooting them from their real ground. it's probably happened so many times and so little of what is claimed to be history, is even legitimate.
the catholic church, for instance, western europe barely even read the bible anyway, but the mentions of enoch are there in genesis and jude to be seen. western europe never saw these books since not long after the compilation of the catholic canonical bible and it wasn't until the 17th century someone bumped into it in ethiopia. and now most "scholars" think that the text is not legitimate, and/or they date it to as recently as 500BC
convenient.
you more or less end up having to decide what you are going to believe, or what you think is suspect. for example, the lack of writings relating to Jesus from his time, doesn't mean nobody other than christians wrote about Him, it could just mean that at first the romans tried to memoryhole christianity. christians held tight onto their books and so we have them now.
anyone who claims that a relatively commonly considered to be legitimate piece of historical writing is not legitimate has nothing to stand on considering this situation. the romans had an obvious reason to try to suppress christianity, because ultimately it was one of the things that ended their rule. first it broke the empire in two, and then completely destroyed it. oh yeah, some homo materialist historian will try to say that it was economics or the mongols or something, and these things had a definite role in the play but to say that christianity and the law that it posits is at odds with the cult of government... yeah, for a reason, and you can read it in several places in the bible what reason governments wouldn't like christians.
nothing has really much changed since then and i don't trust these "scholars" they are just grotesque parrots of propaganda, since that is what most of history is actually, in fact.