I can't say I agree with all of your arguments, but I'm with you! I hope the Olympics aren't canceled...That does not make any sense to me. There are hardly any cases in Japan (28 the last time I checked) and the whole Tokyo metro area will not get much less crowded by cancelling a trade show or even the Olympics. I also did not understand why the MWC was cancelled. At the same time you still have long queues at millions of supermarkets around the world.
Staying at home does not make you much safer unless you really self-quarantine in your house without any contact to the outside world.
Personally I would be very angry if the Olympics were cancelled. I had to pay about $400 per night for an 11 square metre hotel room in a (at normal times) very cheap hotel and that money is not refundable. For me that is quite a lot of money. I am not rich and I am so much looking forward to visiting my third Olympics after Beijing 2008 and Rio 2016. I did not make any vacation at all last year, because I had to save all my money for the Olympics.
Of course I do not want to catch the virus, but I do not see how staying in Germany (where we also have some cases) instead of Japan should save me from catching the virus. Actually if you even live in a dangerous country like the US, staying at home might statistically even be more dangerous than visiting Japan, where crime is almost non-existant. Also inside a plane you are statistically safer than outside a plane. So cancelling flights will cause many deaths.