So I've been seeing this discussed on several other forums around the internet and haven't heard any response on the matter from fellow muslims, and unfortunately my own knowledge on the matter is greatly lacking.

Basically certain people called into question what we know about pre islamic Arabia and early islamic history. They claim that most of the info we have comes from muslim records and they deem that to be problematic due to potential bias.

I feel that there is merit in that train of thought. What's the best way to approach this matter?