In my opinion, the issue with this collectivist society attitude is, very few people think for themselves unless they're explicitly told what to do. This has been the issue in Tokyo and Japan in general, it's wear masks, social distance, but get on a packed commuter train. People just do it, although it makes no practical sense and everyone knows it's stupid, it's just done.
Look at the case numbers in Tokyo though, not going well.
But I get your point. People doing collective things is not necessarily good. "Hey everyone, lets go to war" Ok.
That's not limited to Japan, we have plenty of it in the Anglo-sphere as well.
I go out and I almost NEVER see people without masks.
Of course in the ideal world only the people that are correct would think for themselves or everyone would be correct all the time. But it doesn't work that way, usually people that think for themselves are wrong. When a culture has more people willing to go against the grain sometimes they will be right and make things better but more often they will be wrong and make things worse.