They are committing genocide of whoever; even the most conservative entities are warning that the "non-Muslims" are the ISIS troglodites and not the others. This of threatening who leaves Syria and Iraq is one of the ISIS propaganda methods to try to get followers [groupies] and to scare all those people that would like to comment against them. From Muslim entities telling that ISIS aren't Muslims is something very effective in the Islamic communities, to dissociate the violence from the religion; this because ISIS themselves are exploiting the name of their religion to attract people... Imagine being in Italy 200 years ago: the main points to refer to were the local powerful people and the Church, so an organization may be called "Christian... *something* Entity" would have had a lot of trust within the population just as they identified it as "Christian"; this happens in the communities where the religious values have a lot of importance. So, now "ISIS" with their propaganda name exploits the word "Islam" to attract people and uses words picked from religious beliefs, that are very strong in Middle East, like "Sin" "Sinners" to try to attract+scare+intimidate the refugees...
Objectively I think none of the refugees that left their homes exactly because of the daesh or Assad wants wars anymore; ISIS/daesh have committed war crimes comparable to Nazism, including genocide.
Clearly these people are completely mad: aren't rape, slaughter, beating, harassment of even little kids a SIN?
I hope the Muslim community will counteract worldwide by calling the daesh "demons" back. It will give an idea to eventual "confused" people of where to stand, including young ones that risk to be recruited.