Drawing the lines between what types of media are and aren’t allowed is a major issue with this type of law, regardless of if you think it’s a good idea or not.
"I hope someone likes my review" is not that much different than "I hope someone likes my tweet" or "I hope someone replies to my IG post" or "I hope someone replies to my HN comment".
All 4 scenarios trigger the same thing which is setting up a future expectation that's hopefully met while you wait with anticipation of the event. Is that the process they are trying to get a handle on?
Personally I don't know how any of that could get enforced. Even making the internet read-only wouldn't work because that wouldn't stop people from internally comparing themselves to someone else who is allowed to post. Although that type of thing has been going on since advertising existed.