Hadith literature only makes sense when readers also understand the sciences built to evaluate it. Muslim scholars studied narrators, compared chains, searched for hidden defects, and distinguished stronger reports from weaker ones with impressive rigor.
That does not mean every historical question disappears. It does mean careless claims about Islam having no internal standards of evidence simply do not survive contact with the scholarly tradition itself.
This article gives visitors a readable first introduction to that world before later phases add more technical material.