Sadly, these geography only terms are not only problematic in terms of categorisation (where do you put collision zones?!) but also in terms of misunderstandings. Qn: what exactly is being destroyed at a destructive margin? Sadly, misleading diagrams like these are prolific on the Internet.

The reality is, as evidenced by seismic tomography, the subducting slab descends into the upper mantle. Sometimes it can stall at the mantle transition zone, but often it continues to sink into the lower mantle, reaching the core mantle boundary. It remains thermally distinct that entire time!