On platforms like Instagram, TikTok, or X (Twitter), this refers to the accidental "double-tap" or "like" on a post while scrolling.
In gaming culture, "premature thumbs" usually refers to a specific type of or user behavior : 1. The "Premature Thumb" Phenomenon (Gaming) freemature thumbs
If "freemature" refers to a specific product or a very niche feature I missed, could you provide about where you saw it (e.g., an app name or a specific game)? On platforms like Instagram, TikTok, or X (Twitter),