my dear bro,
their approach is that of the orientalists of the 19th century like caetani and later patricia crone who were more than willing to stick to islamic historical sources for anything negative about islam ( like conflict between muslims) but any positive reports were dismissed out of hand as simply propoganda.
I can see that.
And i'm glad to see you have ample knowledge on the subject. May Allah Bless ya.
If they could answer any single question in a proper manner... but unfortunately they can just wag their tongues... but the topic keeps derailing...