Topic isn’t an idea
A topic is: “Hollywood reboots.”
An idea is: “Why do we keep paying for reboots we already expect to hate?”
That difference is everything.
Because “Hollywood reboots” sounds like a pub conversation.
But “why am I the sucker who keeps funding this?” makes the viewer feel called out—in a fun way—like:
“Wait… why do I do that?”
That’s a video. That’s watch time.
Rule: If the answer is obvious in 2 seconds (“money,” “because it’s easier,” “because people like it”), you don’t have an idea yet. You have a Wikipedia entry.