Oh, I am not suggesting using anything from their survey. I am thinking of a survey designed from zero by elderly people to find out things from elderly people.
For example, online shopping.
There is something I wanted to buy from one company (some shirts) but their delivery was by a courier who would deliver at some time between 8 am and 8 pm, without any prior notification of a delivery time window at all.
So, living alone, I cannot be able to go to the window (previously, door) at every minute during those twelve hours. It is simply not possible.
So I didn't buy the shirts because although it might have worked out fine I was concerned over what might happen if the courier knocked the door and I could not respond at that time.
Yes, everyone gets conflated into age bands. Yet there are vast variations of people's circumstances.
The issue as I am, perhaps naively, thinking is that there is a balance between asking specific questions and just having one free format text area in which respondents express their needs, including needs that, as far as the respondent knows, is not presently available.
Perhaps a series of questions each with some preset answers and each having a free format text area, such that one can use either a preset, or the text area, or both.