It's obviously original research. You could certainly state that "A number of legal scholars have stated that...", with your reference, but it's not up to you to decide that "legal consensus" is, it's up to experts in the area.
Exactly. Stating what various sources say on the matter is just regular research. Drawing conclusions as to consensus is original research. You don't have a source to verify the consensus, you just have a collection of sources agreeing with eachother. For example, where is the source saying there aren't any articles on the subject other than the ones you've cited?