I asked him what is a better way to quickly/easily stand up microservices/apps for clients (90% of my job), if not Django (or Flask/FastAPI, etc).
His response was "django is great, but it could have been written better and in another language" ... well, sure, great... but that doesn't solve my problem, lol.
We use Django for tons of client projects and rarely ever hit the "limitations" wall. It is mostly CRUD apps, so that helps but I would argue the time saved using frameworks in our shop is much more than the time lost spent on working around limitations. I do think the author has good ideas tho, good principals... but if you know your craft well, you know what will/won't work in a framework and how to solve that.