For critical writing (even in forums) I think a spoiler warning is implicit, because what is the point of talking about the game without talking about it? This morning I read a good piece on Florence that entirely spoils the game without a second thought, because it’s about how the writer relates to the themes of it, which cannot be discussed without giving them away. Waypoint as a site thrives on discussing this aspect of games, going beyond “but is it fun?”
Adding a spoiler warning up front wouldn’t be a big deal, but I think it makes more sense for us readers to expect this from essays rather than entering discussions about something while expecting to not be “spoiled” on it. Reviews and pre-review discussions I see the point in being more careful in since most readers may be engaging with it at the time and that can be a different type of discussion.
For the case of the FF7 remake, or indeed when anyone is new to any old piece of media, I think it makes sense that such spoiler-less discussions can exist. I also think it’s fair that coverage is more careful with headlines until the moment is over again.