There are many lay people and scholars alike, both with and without the Muslim...

There are many lay people and scholars alike, both with and without the Muslim community, who feel that the pure orthodox Islam of the fundamentalists could never survive outside the context of its seventh-century Arabian origins. Apply twenty-first-century science, logic, or humanistic reasoning to it and it falls apart.
They believe this is why Islam has always relied so heavily on the threat of death. Question Islam, malign Islam, or leave Islam and you will be killed. It is a totalitarian modus operandi that silences all dissent and examination, thereby protecting the faith from ever having to defend itself.