Part of it is the idea that everything is now “content” - to be consumed, and then discarded or forgotten. There are too many people who don’t bother commenting on things, because the stuff they’re looking at is all interchangeable in their mind.
And frankly, genAI is making this worse, as the individual touch is lost unless the prompter is very particular about what and how they’re prompting.
There are some people on this site whose images I can immediately recognize, because of a consistent look/feel/theme, and an awful lot of people generating and posting Trixie butts (for example) that don’t stand out in any way from dozens of Trixie butts posted before.