Isn't every religion?
There is no other religions that has a system of jurisprudence quite like what Islam has... one that governs every aspect of life and society. One that has been used for over 1400 years as the basis of law in many countries so it has a track record that can be seen going back a long time.
There are things in Sharia that do not exist in any other religions law. For example the law that states that it is the responsibility of every Muslim to fight and/or support violent jihad against all non-Muslims until they are either converted, subjugated and pay taxes to Islamic rulers or killed.
There are dozens on laws that are explicitly anti anyone who is not Muslim limiting their rights and even their life.
There are also the laws against blasphemies and apostasy that require punishment by death. Yes I know that some Islamic countries only give jail sentences and caning (a long drawn out death sentence) for this. But that is no better.
Further, I am not advocating for any religion having the right to set up parallel courts in the USA. I am as much against Catholics, Jews, Protestants, Hindus, pasta-farinas, Wiccans, Satanists, and any or religious group doing this.
It's just that right now, it is Islamic organizations in the USA, Canada and Europe who are pushing this. In Europe they have gained a lot of ground. Canada took a serious look at is and decided not to allow it. But here is the USA some seem to think that it is 'racist' to object to Sharia courts being allowed.