As a fan of both, the LiveView DX is simpler than Hotwire's (though of course there are trade-offs both ways). With Hotwire you have the think about frames whereas LiveView is more like React where you just change the state and the appropriate diff is patched in without having to think about much else. This is not to say that Hotwire's frames are complex, LiveView is just that much simpler in that regard.
Yep, that's the whole thing, these technologies have strengths and weaknesses for different application. But of course most people just want to learn only one (and I don't blame them).