The olympics angle is somewhat irrelevant — if Japan is totally covid free, but the rest of the world is a mess, then the olympics still can't happen. Local coverup brings no obvious benefits.

To announce a shift in olympic schedule requires a total behind the scenes replanning. I suspect they're on that now, and will announce a new date once logistics have been finalized.

At this point it will hardly matter what numbers Japan present to the world, it is the rest of the world that will decide.

Continued lockdown will make it very hard to train properly, leading to a belief that the olympics should be moved. The show must go on does not seem to apply.

Already now the European football championship has been postponed.

Why not wait until people will come and see it anyways? Rushing it seems foolish.