[interlocutor]

> Where do you find this recommendation?

https://reactjs.org/blog/2018/06/07/you-probably-dont-need-d...

> keys are usually only used for repeating sets of elements

Not true at all!

[Lutger]

From the blog you posted:

> In most cases, this is the best way to handle *state that needs to be reset*

You are talking about updating state, react author is talking about resetting. That's a big difference.