Assuming you are referring to Oli Dugmore? The New Statesman, which he is the digital editor of, is generally considered left-wing, progressive, and centre-left. IMHO you cannot live and work in an a leftist environment (even if you call yourself an 'editor') and not be affected by the self-imposed echo chamber you work within. I think he, and some of the younger generations who believe in "intergenerational wealth inequality", often close their minds to the alternative rationale (which I have expounded on in other posts).
The state pension is a safety net for their future too and defending a strong state pension today ensures that the system will still exist when younger generations reach retirement age. Lowering the bar now hurts them later. If the state pension is insufficient to cover basic living and health needs, the financial and emotional care-giving burden falls directly onto their adult children (spookily enough, the younger generation).
Life, in reality, is swings and roundabouts, and older people (parents and grandparents) actually do an awful lot of heavy lifting for the younger generations that often criticise them. Parents and older generations in the UK support younger generations through childcare, financial assistance, housing support, and practical life mentoring. The 'bank of Gran and Dad' is one example. Many older adults and parents provide financial gifts or loans to help younger generations pay for university costs, clear debts, or save for high living expenses. Older family members frequently help younger relatives fund house deposits to navigate high UK property prices. Grandparents regularly look after grandchildren, saving families large amounts of money on nursery and babysitting fees. And a rising number of young adults live rent-free or low-rent in family homes or with grandparents while saving money towards their future.
It's convenient for agenda driven people like Oli Dugmore to ignore how much the older generations actually contribute to society on an intergenerational level. And I haven't even mentioned the the lion's share of volunteering, informal care, and financial backing for charities and hospices, that older people provide on a volunteer basis.