Comment by Timon3

> Indeed. It's rare to see real-world scenarios where thousands of items are mass-manipulated on the client side. They exist, but rarely.

I'm not sure this is correct. Almost all apps that I write that display live data are built by replacing the whole client-side array with updated server-side array data, and the other commenters seems to work similarly. With your current approach I'd have to write a complete diffing logic to modify the array in-place locally, especially if I don't want child components to be re-mounted.