In the age of SPAs, I have actually found Django with DRF to be incredibly invaluable. The efficiency of just having to specify a few models and then getting a full REST API for them with minimal effort is tremendous.
I suppose if the framework, community and ecosystem are on par with each other, then the deciding factor would be the language.
I was personally a Rails guy, then switched to learning Django, but had the experience you note...both frameworks solved many problems which aren't as relevant in this age of SPAs. I suppose if you really liked Django's ORM it might be worth it, but doubt there's a huge amount of value to be gained. YMMV.