iFixit recently took on the new Mac Pro and rated it 9 out of 10 for repairability. A "Fixmas miracle," the 2019 model is far easier to repair than older "trashcan" Macs. Together with the new public repair manuals, servicing is more user-friendly than ever.
https://www.notebookcheck.net/A-masterclass-in-repairability-iFixit-tears-down-the-2019-Mac-Pro.447870.0.html