Then why has Cat stevens done on to lots of Charity work in bosnia and he has found schools etc. Are these an actions of a terrorist?
Firstly the tabari narration is not about the Prophet Muhammad he did not fire any arrow here and this is in the time of war against another tribe. War is deception.
Secondly that the to cut off the poets tongue meant to pay off the poet so he would not compose poetry against them.
Ishaq:595 "The Apostle said, 'Get him away from me and cut off his tongue.'"
This was also about a poet because the poetry in that time was like the media. Also permission was not given.
Ishaq:312 "Umar said to the Apostle, 'Let me pull out Suhayl's two front teeth. That way his tongue will stick out and he will never be able to speak against you again.'"
This was from from people who has stolen the property of the muslims from the pagans of mecca who had plundered from them. Also they did not kill them.
Ishaq:316 "Following Badr, Muhammad sent a number of raiders with orders to capture some of the Meccans and burn them alive."
Qur'an 8:12 "Your Lord inspired the angels with the message: 'I will terrorize the unbelievers. Therefore smite them on their necks and every joint and incapacitate them. Strike off their heads and cut off each of their fingers and toes."
This is an incorrect translation - here is the correct translation.
"When your Lord inspired the angels, with whom He reinforced the Muslims, [saying]: ‘I am with you, with assistance and victorious help, so make the believers stand firm, by helping [them] and giving [them] good tidings. I shall cast terror, fear, into the hearts of the disbelievers; so smite above the necks, that is, the heads, and smite of them every finger!’, that is, [smite] the extremities of their hands and feet: thus, when one of them went to strike an disbeliever’s head, it would roll off before his sword reached it. The Prophet (s) threw a handful of pebbles against them and every single idolater was struck in his eye, and thus they were defeated."
So if Islam was as violent as you want us the believe then you would find more than this.
In fact you are looking for certain things and highlighting them and ignoring the good things about Islam.