Dogmatic indoctrination is the worst draconian measure.
If you need to put the fear of eternal torture into people's mind through a whole clerical power structure to have the desired effect I don't even know what are we talking about.
Science dogmatically accepts some basic human intuitions and bases itself upon them while rejecting others. See https://www.youtube.com/watch?v=ZNlEtBZxML8 for more info on this. Modern education is indoctrination only with a different set of beliefs. The torture is not eternal in the case of sinning in Islam. Yes, Islam puts the fear of eternal torture into some non-muslims minds for their betterment, for them to be muslim and thus be saved from it. Yet ask millions in the west converting to Islam every single year, they'll tell you they converted because Islam makes actual sense (compatible with human intutitions) while modernity didn't. Islam works with a single person as well as millions, and there's no clerical power structure as per in Christianity. Islam is the single thing ever worked in mass-scale prevention of drugs and alcohol because it's true. Not even Christianity (which Muslims believe has malformed and become too clerical) was able to achieve it, even though alcohol was seen as a sin in many Christian times and places.
If you need to put the fear of eternal torture into people's mind through a whole clerical power structure to have the desired effect I don't even know what are we talking about.