It was a thing before COVID in Tokyo. Don’t know about now. The point I’m trying to make is that this thing NEVER happens in London. Train pushers don’t exist, so even if it’s not an everyday thing in Tokyo anymore I can hardly believe that anyone would say “I prefer the rush hour in Tokyo”, to which my previous post was the response to :)
Even if the trains in Tokyo are more packed (debatable, but I'll concede it for now), there is more to commuting than that. The reliability of the service, the cleanliness or the stations and carriages, the (lack of) pushing and shoving on and on the way to the platform, the temperature and ventilation of the stations and carriages etc. Tokyo wins in all these measurement.
Train congestion has been falling with the decline in population.
Also, the pandemic has really sped up adoption of either wfh, partial wfh, or commuting during “shoulder” hours instead of the peak of peak, from what I’ve heard.