I thought Okayu very much enjoyed attention she was getting for a long time and it wasn't any kind of recent development. You can easily find clips of her flirting in response to funny SCs dating years ago. Especially given she initially wanted to quit and only decided to stay after a very welcome response to her covers from fans praising her voice. Girl had this "only young idol-like voices are in demand" stigma but then accidentally tapped into unknown to her hag market.