I think that it's nice it's explicit that the method returns the current instant, rather than some other zero value.

There's also other methods that return other types, like

    const now = Temporal.Now.instant()

which isn't as bad.

One could argue that the ugliness of the API intentionally reveals the ugliness of datetime. It forces you to really think about what you mean when you want "the current date time," which I think is one of the goals of the API.