Who wants feature X on our product? You get a few saying yeah I’d pay an extra hundred for that, and very few who say no. Meanwhile most people just don’t want it, but never said so and the new feature is a dud.
You quickly learn there's a game. You go and find a bunch of other influencers roughly in your tier (getting some traffic but not rockstars) and you like their posts and follow them. They return the favor.
You comment (nicely) on their stuff, they return the favor. If you've ever played those obnoxious mobile games that want you to recruit your friends, same idea.
Likes and attention farming is basically a pyramid scheme with monopoly money.
Just because people 'like' them, doesn't mean they aren't ultimately destructive for society, and worthy of Government regulation/banning.
If nothing else, it’s good feedback to know what resonates with your audience.