If you said no, may I suggest that you venture out of your age ghetto and go meet some?
If you said yes, will you do me a favor? Will you check to make sure that they aren't trying to walk around on shoes that are so unevenly worn that their feet are cocked at dangerous angles? This happens all too often.
I first discovered this when my grandmother was feeble and wobbly and having trouble walking and we all were thinking what a shame it was how crippled she had become - until one of my aunts thought to look at her soles, went Yikes!, and got Grandma new shoes. Just like that, Grandma wasn't nearly as crippled. Imagine that.
Since then, I've found that quite a few old people are like Grandma was, and just don't notice that they're forcing themselves to walk somewhat on the sides of their feet, which would be bad enough for young ankles, but is horrible for old ones.
Your old friend might need help getting to the shoe store, but I'm confident you could help with that, directly or indirectly. They might need help paying for the shoes, but I'm sure you could help with that directly or indirectly, too. (And don't forget that thrift stores sometimes have shoes that aren't all worn out.)
At the least, please point out the problem to them, if they have it. You might spare them unnecessary suffering. Thanks.