Mohammed claiming god revealed it to him, is not a credible argument, it needs external verification.
However, the 'till' bit and the fact that they clearly say they believed it was pagan before mohammed heard voices, and the other evidence in my earlier reply shows its origins are pagan, even your books confirm it, or there'd be no need for the 'revelation'.
Edit. Let me see if I can break it down a bit more.
They believed it was pagan, because that's what their eyes and experience had witnessed. The fact that your books even need to try to explain why it's no longer pagan, says it was in deed pagan up to that point.
They believed their own first hand evidence 'till' mohamed said he'd heard voices. bells or whatever, which he takes to mean that these things were originally for his god, but pagans took them, and now followers of mohamed can take them back.
This claim from mohamed needs some external proof. I'd argue that the fact no abrahimic faiths have similar and that it's unlikely Abraham ever went near mecca, and had probably never heard of it, as it gets little mention in other writing of the time, so wasn't a significant place, and it's unlikely that the kaaba is old enough, all point to it being pagan. There is evidence from historians that the nomadic, pagan arabs would travel to meet up once a year to settle any tribal disputes, and these 'pilgrimages' are the most likely source of the hajj.
Even if you choose to deny any or all of that, your ultimate claim is that it was from the Abrahimic faith, which itself takes its stories from earlier pagan tales.
Someone hearing voices, images or sensations and claiming they're divine, is not proof, as Peter Sutcliffe found out when he tried that one.
You have gone full rant mode again, but now throwing in insults/digs. No need for that
Your points are totally invalid because as it is clear and I have pointed out time and time again I haven't bought Muhammad into this debate. We are discussing what YOU bought as evidence and it is Anas who made this statement not Muhammad
The only bit I added was that the SAI is based on Hagar and Ishmael. If you can show evidence that it was there prior to Hagar and Ishmael then bring your evidence

. Can see right through it and I wouldn't patronise myself by trying to 'discuss' anything with someone who's default is that. My approach to that is somewhat different to debate lol