The elderly are grown adults who have a lifetime of experience and can be expected to see through the charade and spot what's really going on. Young people are more naive. I'm almost legally a senior citizen and I saw Facebook for what it was a long time ago, and most of the people I know who are my age don't use it, they don't even like social media in general. They use email or text messages, mostly. The people who have asked me why I don't have Insta are all in their 20s.

Yes, some elderly are disabled by mental decline or dementia, that's no different from a mental disability at any age.