Honestly, the project just feels stagnant to me. I get wanting to support plugins/the community for as long as possible, but I fear not having a sensible web framework has done nothing but given credence to the common criticism that WP shouldn't be taken seriously.
From my perspective as an owner of a small open source project, Matt's comments have been petty and vindictive. I personally probably will never touch the platform again. There's too many other frameworks out there, whether you want something similar like Statamic, Grav, Drupal.. or if you want to build with an actual app framework with Laravel, ASP.NET Core, etc.