Christopher Hitchens was one of the few outspoken atheists that actually called out Islam.
Back in 2009 he was warning the west about mass immigration being disproportionately full of Muslims.

Not one of them would dream of trying to assimilate into whatever gracious country allowed them in .
Instead importing their hateful bigoted stone Age ideals with them. Slowly infecting their new surroundings until
the host country resembled exactly where they escaped from.. . But who listened to him . ? No-one.

Lennox is/was free to build cathedrals of logic on foundations of sand, but he was stupid to expect those cathedrals to remain standing when the wind of logic and reason touched them.