I pretty much agree with what you have said there. This is not a religion. It is a death cult. Lying isn’t a problem for people who think the behaviors exhibited by terrorists are reasoned. Even if one doesn’t buy into that description, the fact that he buys into Islam at all, with it’s sordid traits, reveals a severely flawed person on the face of it.
For that reason, it seems to me the reverence and fervor that Islam's adherents bring to their death cult they would completely ascribe to "their religion." Indeed, virtually all the world's dictionary definitions of religion would side with considering Islam to be a religion.
Though I agree with you and see its adherents as fundamentally and inherently flawed with respect to the true God, our NT scripture (Jas. 1:27) calls pure and undefiled religion: "to visit orphans and widows in their distress, and to keep oneself unstained by the world."
I'm sure millions of Muslims care for and visit orphans and widows in their distress, while being oblivious to the mass-delusional, vile and worldly stain Muhammed promulgated onto his followers and slaves and was able to perpetuate through his writings and its submissive adherents, down through the centuries.
I would understand that God has had His Hand in the mass delusion of these lost creatures and though Mohammed and the Prince of This World surely meant Islam for evil onto God's chosen and elect, God causes all things to work together for good to those who love Him, to those who are called according to His purpose. (Rom. 8:28)
HF