waiting for all the "well we really haven't breached it till we see multiyear it might be a blip". Its a full year. that is more than enough. I would say we really breached it before 2023.
It was symbolic though, as welll as based on evidence. The world's commitment to take action to avoid breaching the barrier was a symbol of united, global political action. The fact that we have failed... and failed ahead of predictions is of course deeply worrying.