[vbezhenar]

Strict mode is not something that should be avoided. In the future versions React will do stuff that it does with strict mode today. Of course you can use a regular async function in useEffect but you'll quickly notice that it's called twice in strict mode. And you'll want to abort running fetch. Then you'll notice that responses can arrive out of order and your state updated with outdated response which happened to arrive last. It's easy to use async code in useEffect. It's not easy to use it correctly.

[harel]

Whether it should or should not be avoided is a preference. That is why it's not forced. I don't want or need it. And if I do, and it's caveated with double-useEffect - so be it. I have a feeling there is a lot of overkill in your approach but of course I lack context so apologies if I'm wrong.