In fact, I find Django and Postgres to be the best solution for htmx but Go stack is probably almost as good in terms of developer velocity and obviously much faster. So I think that's a good solution.
You can really build powerful production apps with htmx, and what people underestimate is how good it is with AI assisted development (Claude understands it and does it well, and if any JS glue logic on a specific template is required, it's pretty well written and not a mess).
Skill.md here: https://github.com/dunctk/rasx-app-framework
And if you do, why start with a simpler framework?