Any content that was produced with the primary intent of making people angry.
Problem is that’s really hard to identify unless you know the original author’s intent. Just because it makes someone angry doesn’t necessarily mean it’s rage bait, but if it was explicitly made with that goal in mind, that’s what I would describe as rage bait.
Not defending this, but it did remind me of how nuts the monetization was on the original. I had a modded 360 at the time, and there used to be an old school forum style website that curated all available DLC. This game had exclusive content for GameStop, Walmart, Target, and I think a 4th and 5th retailer too. Not to mention the pre-order bonuses and other exclusives. I wanna say there were around 25 different pieces of content and to get 100% of what was available, youd’ve had to buy 5 retail copies of the same game… or have a modded 360 and an internet connection. Even unlocking the content was more of a hassle than most DLCs. You had to move your user profile to a USB stick, connect it to your PC, inject the entitlements to the exclusive costumes into your profile, then move the profile back to your console.
The A.V. Club used to do a series where bands would come on and choose from a list of songs to cover. As the season goes on, the list shrinks and the covers get more exotic. You can search “av undercover” on YouTube to watch through the back catalog of old seasons for some pretty great covers. I don’t think they do it anymore, but it ran for several years.