Yes, the stabbings in Canada was a terrorist attack because the assailant was a Muslim and said that Allah told him to commit the violent attacks. Canadian Prime Minister Justin Trudeau released a statement saying that Canada will not be intimidated by acts of terror and that the country needs to pull together and pray for the victims.
Yes, the stabbings in Canada was a terrorist attack because the assailant was a Muslim man and claimed that Allah spoke to him and told him to carry out the violent attacks. The Canadian Prime Minister publicly stated that Canada would not be intimidated by the acts of terror and hate and also that the nation should stick together and pray for the victims.
The stabbings in Canada is the act of an individual. Even though he is part of a religion, and believes that his god told him to commit the crime, it does not mean that his views represent the belief of his entire religion. This individual acted solely out of his own delusional belief, without instruction from anyone inside his religious organization, and without any agenda. He should be held accountable for his own actions, rather than blaming the entire religion he belongs to.
It is called insanity, regardless of the name you call your god. He was not part of any terrorist cell. Terrorism is a political act, not one crazy guy with a knife. In fact the definition of terrorism: the use of violence and intimidation in the pursuit of political aims, has not been met by this act.
The individual who commited the crime did not have any ties with any major criminal organizations, and it is impossible to quantify them as terrorist attacks because of their nature. It is just another example of religious fanatacism, something that all people are capable of, regardless of their race and creed.