So there needs to be workplace, education and training changes put into place so that there are "less physically demanding" jobs available to older people. Trouble is, such changes would require politicians to start long term thinking and, dare I say it, collaboration between the major parties, which sadly simply won't happen!
It's stupid that younger people (fitter and healthier) are almost being forced into "degree level" office jobs that aren't physically demanding, but that older people are having to leave their "harder physical" jobs because their bodies aren't up to it anymore. The older people need education, training, etc., so they can leave their physically demanding jobs and move into less physical jobs. The younger ones should be doing the physical work, not sitting staring at screens!
When I was in the police in the 80s, the front desk, offices, etc., were typically mostly staffed with PCs who were, let's say to be polite, less physically able to be pounding the streets, either due to weight, eyesight problems, or other illnesses. They're weren't just pensioned off and their experience thrown away. They were a valuable resource to help and support the younger ones, and were also a lot better at dealing with the general public due to their extensive experience. Now all that is done by typically younger civilian staff who don't have the extensive knowledge and experience.
Workplaces really need to start valuing experience, but at the same time, the adult education industry needs to be resurrected - it was virtually abandoned in favour of all education resources being thrown at 16-21 year olds!