Most pensioners have actually come out of this year better off financially - as they have stayed at home, still go their pension money paid into their banks, and cut their expenditure ( no holidays, meals out, visits to theatres, cinema or, even to the hairdressers).
But that is true of countless people who have been working from home or furloughed. According to the news last night four fifths of the population have saved money in lockdown. The other fifth, made up of the disadvantaged, have had to borrow or eat into savings in order to stay afloat. IMO this is where we need to concentrate our efforts. Everyone has suffered, but some have suffered more than others - children from poorer families will have suffered far more than others, and the fact that there is even a discussion about cutting the £20 extra Universal Credit whilst people on furlough were paid up to £2600 a month is testament to the fact that people don't care about the gross inequalities in this country.
Not everything about this is generational. Young people have died of Covid. Not all older people are pensioners - many still work. Groups other then 'the old' are vulnerable too - as has been said, BAME people, Diabetics, the overweight, asthmatics and others with underlying conditions are at serious risk too, whatever their age.
If everyone went about their business and let the vulnerable shift for themselves, a lot of older people would be out and about, and a lot of vulnerable younger ones would be at risk from them. IMO that would be selfish - it is far better that we all, whatever our age, do as much as we can to help one another to get through this.