Probably because he has firm faith in Allah almighty and his blessings. Recite ayat ul kursi.
A shitivic with an immobiliser can be snatched on gun point from you, what good is a tracker or an immobiliser then? Just an example.
Have faith, leave the rest to ya kismat ya naseeb. Allah knows what will happen to whom at what time of their life. Immobiliser can NOT prevent the pain you are destined to bear.
Yes it is an excellent feature and toyota indus should provide in corolla at all costs. But going crazy over this mere thing is simply ultimate foolishness.