If you don't need React, you probably don't need a framework anyway. The reason I use React is to create components that can exist on their own (and can be constructed/visualized on a StoryBook) and these components will then play nice with other React components. And then use JSX to make reasoning about the code simple. That's not what htmx is.

> htmx is a library that allows you to access modern browser features directly from HTML, rather than using javascript.

From React website:

> React lets you build user interfaces out of individual pieces called components. Create your own React components like Thumbnail, LikeButton, and Video. Then combine them into entire screens, pages, and apps.

Apples and Oranges.