It is hard to get a light EV when the batteries themselves are around 1/10 the energy density of gasoline and people want them to have a longer range than a gas car to make up for charging so you end up with a battery that’s 500-1000lbs. To put that into perspective a Miata weighs around 2000lbs

You don’t have to get up because another person gets on, for priority seats they are reserved for those with “special needs” I.e. the elderly or disabled. But it’s common courtesy everywhere to offer your seat to an older/disabled/pregnant passenger.

People should also absolutely be judged for disturbing the peace if you want to talk to your friend on the train you talk in a quiet respectful volume there is no need to talk loud enough everyone around you can hear it.

The Japanese just generally have a respect for rules and for not negatively affecting other people

If the job is in an industry regulated by the fda it can be considered a conflict of interest and normal government employees would need to have that approved by an ethics committee