I know it isn't PC to see it or acknowledge it, but the point made here is that the larger percentage of Muslims that accrues, the more 'radicalization' WILL--not might, but WILL--occur. It is required of them as one of the basic tenets of their religion.
#1) What exactly do you mean by radicalization?
#2) Please show me anywhere in the Quran where so called "radicalization" is a basic tenet of Islam?
In this context 'radicalization' is the implementation of Sharia Law. And you yourself have said that this is what the Qu'ran teaches and that Islam does intend that all the world shall be under the authority of Allah even as you sidestepped questions re how that will be accomplished. You also chided Christians as being spineless because they don't punish those who mock or criticize the figurehead of that faith, which to me is a pretty radical position.
If you tell me that you, a Muslim, would oppose the implementation of Sharia Law in the USA, then you will be off the hook on this.