The problem is Django itself as a framework and Python as a slow infrastructure for it are getting too old with time. I love Django but it grows too restrictive as projects get more complicated (ORM and template rendering for example), not to mention the slow performance compared to new languages like Go and Elixir, which is actually Python's responsibility not Django.

Django is a monolithic framework that wants to do everything while there are good and even superior alternatives(SQlAlchemy, Jinja2, WTForms), which makes things harder for its developers.