Being an atheist, I'd be the first to go.
But you need to learn to put "submission" into proper context. The definition of Islam as "submission" means submission of one's self to God/Allah's will (like James 4:7 "Submit yourselves therefore to God."), not to the Muslim religion.
Of course they believe the only way to follow God's will is to be a Muslim, but then Christians believe they have the monopoly on the One True Religion™ too.
I do have a solid understanding of islam, but I'm not Christian either.
What I said stands, and I really wish fr had an ignore user option so I didn't have to see you supporting the tool of our own destruction.