It's not against Islam, there is even a scene in this where an Islamic woman is talking about how fulfilling her religion is. Islam and ISIS are not one and the same. You can be Islamic and not agree with ISIS.
Viewing post in Fuck ISIS: The Super Patriotic Dating SIM comments
Yes, you are right, but there is a problem
The existence of the black flag in this content is offensive to Muslims because the words on it are sacred and should not be placed here so please remove it from the image.
I know you are not against Muslims, but this flag here offends them, especially by replacing sacred words written on it with sexual objects, which is very offensive.
Thanks for the comment, truly! I appreciate this perspective, and I'll carefully consider it.
For a bit of context, the black flag is a reference to an art project by Paul Coombs, an artist in the UK who made it in protest to ISIS's interpretation of Islam. https://news.artnet.com/art-world/paul-coombs-on-isis-dildo-flag-313838 This is listed in the credits to the game as well.