Sure. I personally think SPAs/React have better DX than HTMX. IMO, the most compelling reasons to use HTMX instead (for building dynamic/interactive web applications) are to reduce the amount of JavaScript sent to the client and make pages become interactive faster. These are UX concerns: how much the user has to download (waiting) and how long before the page becomes interactive (waiting).

With HTMX, you get these benefits regardless of what language you use on the server. These benefits could be reasons the parent commenter chose HTMX, and JavaScript is a perfectly good language to serve HTMX applications for the reasons I mentioned.