Most of the alternatives you list wind up having to be cobbled together with other things to create a full application, I think Django still delivers very well

Most of the alternatives you list wind up having to be cobbled together with other things to create a full application, I think Django still delivers very well on the promise of being an extensible unifying layer that keeps development focused on differentiated work rather than reinventing too many wheels. Having used Django on and off for ten years or so I don’t perceive the ecosystem to be dying–the last large project I worked on used dozens of third party Django plugins and only one or two were unmaintained, and even those had some active forks happening.