it depends
1. Some old people are too old to move easily, so you should give way when you wander on the bus. One is to consider his personal safety, and the other is to respect the old and love the young, which is the traditional virtue of China. Everyone will get old one day.
Some old people are in better health than all of us, and they are not very old. They get on the bus to grab seats and so on. When they got on the bus for free, they also chose many people. "When I got on the bus, I was Jackie Chan, and after I got on the bus, I was Lin Daiyu." Once I met a car that didn't stop, I squeezed up from the back door, ran around looking for a seat, yelling and killing several people from a group of young people who were working together. At this time, I don't think we have to give in. After all, young people are very tired at work, and sometimes they have to squeeze the bus 1 hour or more. Those who are healthy but not very old can consider giving way, so we can't judge whether they have quality or not.
The slogan on the bus is also "Give your seat to those who need help". Some old people don't necessarily need your help, but sometimes they indulge.
Personal opinion:
If you are disabled, sick, pregnant or holding a child, let them go.
The elderly depend on the situation.