I would love to see Tokyo one day. The possibility to combine the Olympics with a trip seems so great. Its a pitty that traveling seems not possible the next months. I hope you can go on your trip to Tokyo when Covid-19 is no more. Fingers crossed!
Its a very tough decision ... On one side the delay was already very expensive and it would be a pitty if they have to cancel it. But on the other hand this pandamic should be treated seriously. So your are presumably right.
Lets just hope that it will take place in 2024. Due to Covid I am unsure about every big event in the future. But in my opinion Marie Jose Perec would be a great choice.