> I much prefer Python

Well... that's a valid reason. Why should I work with tool B when I prefer tool A ?

> I also do not see much reason to do more than emit JSON on the server side.

That's the "SPA over API" mindset we need to reconsider. A lot (and I mean A LOT) of projects are way easier to produce and maintain with server-side rendered views.

HTMX with Django backend really excels in this regard.