In simple terms, this thing is about taking the 'mouth-lashing' on Twitter and bringing it to Binance Square. It's actually relatively friendly for retail investors, but it also indirectly encourages some AI-generated trash writing to grab everyone's attention. In fact, the same script has long been emerging on Twitter; it just depends on how Binance chooses to handle these matters. Otherwise, to be honest, a bunch of advertising copy is not something anyone likes to see.
Furthermore, limiting it to 100 words also greatly promotes the use of AI. Not to mention a large number of direct copies and paste jobs.