Lets compare Jesus to Muhammad for a second.
Jesus preached about loving one another, accepting eachother, treating others with respect and not with violence.
And Muhammad preached about war, killing infidels, killing gays, and oppressing women.
Christianity isnt even comparable, also scout I love that you pulled up the crusades which happened over 900 years ago, can we even criticize the doctrine of islam without having some tool like Scout leap and shout about how a bunch of christians went to retake jerusalem in the loving middle ages.
Not all muslims are terrorists, but the religion of islam has tons of passages which muslims are expected to follow or they will face severe consequences. In every islamic country women are treated worse than second class citizens, LGBTQ people are loving murdered or humiliated like in Iran, where gays either face forced love change or prison.
the Qur'an teaches that you should refer to newer Muhammad quotes, as with the bible, when there is a contradiction. And it just so happens that the later passages are the most violent ones.
TL;DR
Not all muslims are violent, but Islam is violent and intolerant