As I said in my post, it's for situations where that poster starts a thread about a film, series, or franchise that I would want to participate in. The thread in question that caught my attention of those this situation was a discussion of X-Men: Dark Phoenix, a film I want to talk about but I...
I recently discovered that by ignoring a poster not only ignores their individual comments, but also entire threads they've started. That can be problematic if it's a larger topic like discussing a TV series, film, or film franchise which exists beyond the issues of that particular poster...