It's interesting, and part of the great unknown about the post-coronavirus travel market – how much appeal is in the 'bubble' and a non-stop flight?
It's said that in a modern airplane is a pretty safe environment in terms of air filtration, so as long as surfaces are thoroughly cleaned / disinfected and your fellow passengers are not giving COVID-19 a free ride, then you can see why some people would welcome a non-stop flight as a way of reducing exposure.
The other X-factor of course is that we are talking about middle of 2023, and who knows what the state of COVID-19 will be by then – how many countries it'll still be active in, what travel restrictions may still be in place, how travel insurance and company travel policies will shape the appetite for travel.
Air New Zealand notably cancelled its non-stop AKL-JFK plans, due to take wing in October this year, until the end of 2021 "at the earliest", simply because it has no confidence in knowing what that market will look like in 18 months' time – and Sunrise is almost twice that far away.