I am not sure you can say Livewire is a copy. The name suggests that is the case but both projects were started at similar time Livewire is afaik even older project than Liveview (Hotwire is youngest - in a way). They both take different approaches because PHP/Elixir have very different characteristics.

I think Livewire is still pretty great. Since PHP can't do websockets easily they focus on http and in most cases thats just fine. Liveview websockets can be an overkill.