It wasn't Mohammed who founded Islam.

[Rayaan]

Which is not germane to whether or not Mohamed was a historical person, or a later creation for the sake of consolidating political power.

Not really. That is not the actual purpose of the religion. The main purpose of the religion is for assisting moral and internal purification by cultivating higher levels of God-consciousness, and with that earn Paradise.

The problem is always the same, that no matter what institution you're talking about - religion, politics, education, the media, etc. - there are always a few power hungry folks who want to monopolize and use these institutions as tools to force their will on everyone else and gain some profit out of it. But Islam itself was not meant to be a power game. Rather, it is exactly the opposite of that:

"That abode of the afterlife – We grant it to those who do not desire exaltedness upon the earth nor to cause corruption in it. And the best outcome is for those who are righteous." (Surah 28:83)

And what is righteousness?

"Righteousness is not that you turn your faces toward the east or the west, but righteousness is in one who believes in Allah, the Last Day, the angels, the Book, and the prophets and gives wealth, in spite of love for it, to relatives, orphans, the needy, the traveler, those who ask [for help], and for freeing slaves, and who establishes prayer and gives charity, those who fulfill their promise when they promise; and those who are patient in poverty and hardship and during battle. Those are the ones who have been true, and it is those who are the righteous." (Surah 2:177)

Note that the verse above puts a special emphasis on giving, which, again, is directly opposed to the desire to consolidate political power and money and things of that sort.

Spencer is a demagogue, and as such he very much has an ax to grind. He has done very well for himself by peddling his hate-filled crap to the masses. It's his bread and butter, he has nothing else to offer anyone. He is cut from the same cloth as Michael Savage, and like him is barred from entering the UK, along with his playmate Pam Geller. Anything coming from him amounts to fruits of the poisonous tree. If Muhammad being mythical rather than actual has any veracity, then I should be able to find it for myself.

I agree. He's just another clown dressed up in a black suit, who delights in biased re-writing of history while putting on a fake impression of neutral scholarship and a blustering confidence that's been exposed already. That's why not even the non-Muslims really cares about what he says. Almost all of the arguments he used against the historicity of Muhammad can be applied to Moses and Jesus, too, but I doubt he'll admit that since he himself is a disingenuous religious religion-hater. And I've already easily debunked one of his more 'compelling' arguments that the Islamic texts (or rather his own cherry-picked hadiths) are nothing more than a means of political posturing by various religious and ethnic groups.