No. Islam isn't being "misused" in this case. It is in fact being implemented. Death is the punishment for blasphemy in Islam. People can be good or bad, but it takes religion to make a good person do something bad.
Islamic texts actually chastise such behavior but for sake of argument lets assume that Islam (the Qur'an, that book you have probably not read) does condone horrible atrocities. Who wrote the Qur'an? Who invented Islam? Who willingly accepted Islam as an authority? That's right, humans. Human beings invent religion, human beings interpret the meanings of what they invent, and human beings decide how to act on the thing they invented.
So, it goes back to humanity. Unless you have some evidence that a god exists and created the religion and controls the people, then you cannot blame the religion, rather blame what invented it and followed it, HUMANS.
I could write a book of my own personal philosophies and insist that a deity inspired me to write it. It may have a lot of good intention but because it is invented by an imperfect human being, it has faults. Most people today, being somewhat educated, would not allow my writings to compete with what they already accept as divine instruction. But some would. Gradually numbers would grow until my teachings achieved cult status. Jesus was considered a cult leader for a while. Given enough time, my teachings could become a modern organized religion. Why? Because human nature causes us to accept what makes us feel good about who we are in comparison to others. Someone else mentioned that humans are Pack community animals. I tend to agree with that. But we also have compassion and empathy in our nature. These two aspects of us could be detrimental to our survival in some situations. When competing for resources we have to deprive others of basic life sustaining materials. Food, water, and building materials for shelter. We know that in order to take what we need to survive we will be preventing someone else from surviving. This is a sad reality but it is one that every animal on the planet must face. As far as we know, animals do not have religion. They also do not seem to have the same propensity for compassion or empathy. I say SEEM because, maybe they do but they express it differently. Or maybe they are just more capable of logical thought over emotional thought.
But back to my point. We take what we need knowing it will deprive others of what they need. This conflicts with our compassion and empathy. So we devise a way to justify denying others of their needs. By having religion or any other label defining our group, we can justify that we deserve the resources more than the people outside our label or religion. We deserve it more because we are better than them somehow.
You say it takes religion to make a good person do something bad. No it doesn't. Example:
An adult female is pregnant and has one 3 year old child with her. She and her child is stranded away from any other human help. The environment is harsh and she has enough food to last one person 3 days if they eat just the bare minimum to survive. The amount of time it would take her to walk to the nearest source of food, water, and civilization.
She can try to keep the child alive by feeding it and risk running out and starving before they reach help. If she dies, surely her child will die as well as the unborn child. If she allows her child to die, she stands a good chance of reaching civilization saving her own life and the life of her unborn child.
If she chooses to not feed her child, the child will die a slow agonizing death. She will have to watch the child die, torturing herself. Or she could kill her child by suffocation allowing the death to be rather swift. She will still have to live with her act but at least she didn't prolong unnecessary suffering.
So she suffocates her 3 year old and makes it back to civilization where she gives birth to a new child.
The media asks her how she survived and she tells them what she did. Suddenly she is thrown in prison for murdering her 3year old and is told that she committed a terrible immoral act. Did she really? had she not killed her child, they all would likely have died. Killing one's own child is a terrible thing. But it does not require religion to make someone do it.