A real minimalist web framework for Node is Koa. Basically anything besides the bare minimum is a separate dependency, so you only install what you need.
That said, it probably means minimalist in a usage sense. Compared to things like Nest.js (which I love, don't get me wrong), express is a lot more straightforward and basic.
I really feel like we really need to reconsider what "minimalist" means in the js ecosystem.