As someone who wrote a lot of angular back in the day, and who writes a lot of htmx in the current day... That comparison makes absolutely no sense.

The only thing the 2 have in common is the use of HTML attributes for functionality. Completely different on every other axis that matters.

It is different in that some of what happened on the frontend now happens in the backend, but overall, it is the exact same approach, so as I said in a sibling comment, it, it is just a second attempt at angular 1.0 with even more naive assumptions about web.