[mercer]

From what I understand the number of open websocket connections is not really much of an issue, because this is one of the things Phoenix/Elixir excel at.

Memory might become an issue though, I suppose. Every user's state will be in-memory in 'their' LiveView process.

On the other hand, there's much less state needed than with a client-side solution like React, because it can be very quickly fetched when needed.