No thanks.
"Articles" belong to the "collective", and if anything are just an endorsed blog post or documentation piece . No additional answers can be added to the "article", and further edits depend exclusively on the "collective" admins.
Additionally, there is no long-term guarantee that the 'collective' experiment is going to last. If in two years time "collectives" stop making business sense, since they are mostly a tag grouping they can disappear harmlessly. If, on the other hand, we start making existing regular Q&As depend on "collective articles", it's another headache for future-us.
But fundamentally, the issue is that "articles" are not questions. We already have canonicals we can choose as dupe targets. We gain nothing by being able to target "articles" instead of regular SO questions. If an article is good enough as a canonical, it can be posted as a Q&A. Having more Q&As is good.
If it doesn't fit the Q&A model... then why would it be an adequate dupe target? We do not dupe close to external documentation articles.