Yes, IMO, Islam since the koran written, has taught muslims that they can lie and cheat, do whatever it takes, ... if it benefits islam, .... so, no need for a conscience or remorse for wrong doings, etc, as can be rationalised for their own purposes.
What a great system that makes it easy for them to do what they want , whenever they want and to who they want ?
An expanded version of being a catholic, I suppose with "confession", where once confessed can go and do it again, ... so a young friend of mine told me in the 50/60's.