Hot Topic

First of all, something might become a hot topic simply because it's new or novel (like AI, or hair styles). People are often drawn to things that are fresh and exciting, especially if they're different from what they're used to. Secondly, something might become a hot topic or popular simply because it's controversial or divisive. When people have strong opinions about something, whether positive or negative, they're often more likely to talk about it and engage with it online and offline