Sadly, I think there are stereotypes of older people (although not among older people themselves).
When older people feature in the media it is almost always as vulnerable, ill, disabled or demented. There was a tragic accident yesterday when a car driven by a man of 89 killed 2 people. All the press reports headlined his age, with the implication that older people driving are dangerous. I doubt his age would have been headlined if he had been 29, 39 or 49. And people of those ages are responsible for most traffic deaths.
Look at the stereotypical photographs in any government literature or even Age UK. It shows mainly the over 80s who are in need and nothing puts me off retirement flats more than the older people who feature in the adverts for these dwellings, all white haired, white teethed, gurning at a camera, fresh from the beauty salon and achingly elegantly dressed. Yuk!