Yes. He is quite central to Islam as a great prophet, His mother is especially honored (which I appreciate), and He has significance in the End Times. But they deny that He is the Son of God, or that He died on the cross for us, so that we can have eternal life. Which precludes the Trinity. So, they waste their time on Earth fiddling around with rules and legalisms, and annoying their neighbors, instead of _paying attention to what actually matters_. Which is what is in the Apostel's Creed.