The frameworks you listed are not a direct comparison to this lib, nor Rails, nor Django. They are Flask analogs. They are ideal for microservices, but are not a substitute for a batteries-included framework of the sort used in websites.
I love rust, but don't use it for web backends because there is nothing on Django's level.
less rails is... leptos, and a few others
It's also the oldest/most mature tool out there
So definitely a Flask, not a Django. And I want no Flask.
> why anyone would reach for Python for a webapp in 2024
Because it works damn fine, is complete and stable, has a gigantic ecosystem covering virtually every needs in the field and also we know the ins and outs of it.
Of course, less resource consumption is always good, particularly RAM, hence why we're interested in initiatives like RWF or why I keep an eye on the Go ecosystem.
I'm out of touch.. why not?
Most of SSR I see is still SPA + Rest API/GraphQL backend with some scraper generating all the HTML.