I think the Canadian government could have been more proactive in trying to identify this potential use of the drones. That said, as you just mentioned in your question, Azerbaijan made very clear that it wanted to reconquer the secessionist entity. The threat has been mentioned many times in past years. For the military budget of that state, billions of dollars have been raised in past years, to the point where the military spending of the state is equal, if not superior, to the entire budget of Armenia, which is next door. To explain the context, it was a clear message that if diplomacy doesn't work out, by military means the state will reconquer its dissident territory.
That said, Turkey has been an ally of Azerbaijan right from the start. For the past 30 years, Turkey has been supporting Azerbaijan at all times. However, it has done so in a limited way. In the previous iterations of the conflict in the early 1990s, Turkey limited its involvement to organizing an embargo around Armenia. The military support was limited to some military advisers and officers helping Azerbaijan to train. It did not participate directly in the conflict, other than those aspects on the side.
What was new last year was the more intense involvement of Turkey in that conflict. This has something to do with the new assertive policy of Turkey—