The greatest human urge is to have meaning in life. Islam gives meaning to muslims, which is why they are willing to die for it.
To say it is not a religion is to ignore its power.
The subtle distinction between religion and ideology is important.
The “religion” of Mohammedanism is protected.
The ideology of Sharia Law is not.
Folks can pray to Allah all they want. That is a Constitutional right.
Forced imposition of Sharia is an unprotected intrusion.