You’re exactly right.
The largest of these topics literally has 80 likes, which is far more recognition than most genuine content receives. These entire topics are filled with generic responses such as ‘beautiful, wow’, so people clearly understand these posts are jokes, and take this as an opportunity to contribute minimal effort responses.
I’ve left a very descriptive flag on one of these topics with a link to this request, so the moderator who reviews the topic has a little more insight into what I’m referring to. Hopefully something will be done regarding this issue soon.