I recently saw a screenshot from Facebook of a mattress ad presented inline in a page load that had two conventionally attractive normal looking (fully clothed, not immodest at all) women on a mattress. Below it was somebody's grandpa writing a message basically to the effect of "hello sexy ladies I am (name) please chat with me".
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...
This reminded me of something that happened to me maybe 15 years ago. I was helping my Grandpa get his first smart phone. The saleswoman was maybe mid twenties and had a kinda hoarse voice. I was a little bit younger than her and I thought it was cute in its own way but of course I wasn't gonna say anything. She apologized for being hard to understand and my grandpa said no, it was fine, her voice was sexy.
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."