They're not inventing a new world, they're not "conveniently" and consciously sweeping anything under the rug, they're not telling themselves a fairy tale. They're just losing much of the world they were living in and have to deal with what's left, holes and all. Why do you think old people are such easy targets for scams and fraud in general? Do you think only the body degrades with age?
If you're young enough to not have seen this in action ever, you'd be excused for not understanding at all what happens and for building such bad faith scenarios. Common sense and some light reading on the topic would have prevented that nonetheless.
It possibly could have been a bot, but I don't think bots commonly use profile pictures of dishevelled looking 75 year old men. Maybe for commenting on political agitprop, they do...
Naturally I was mortified.
But I wonder how much of it is just "Fuck it, I'm an old man, I'm gonna let my creep flag fly."
You need to reign in your ageism sunshine.
But, I was in my latest teens, earliest twenties; I could have been misreading the situation. All I can say for certain is I was uncomfortable.