Ha it's funny seeing Django in that list because back in day (10 years ago or so) before rails took over I was trying to get everyone to use Django at my job. Then rails exploded and I moved to that.
Anecdotally Django seems less common in the job listing post every month than Rails but is still present, and the python experience is relevant to many more.
Yeah I think it has to do with there being just more python scripts floating around, and Django (or flask) make it easy to turn that random script into a proper api. Plus CS courses have now started teaching python.
I honestly thought Django was mostly dead now.