Not true. The distinction is sedition. Islam advocates overthrow of the Constitution and its replacement with Sharia law, which is effectively sedition (if not legally such in time of war).
It's an easy distinction to make.
Unless you can make Islam illegal based on that distinction, it doesn't matter.
Islam is a legal religion. It has all the protections that apply to other religions, and as such cannot be excluded when other faiths are being included.