I don't like this, because when you're playing with a known group of people, you can quickly learn what they are/aren't willing to commit to. For me, I don't care about superstitious stuff so I don't worry about crossing those boundaries. For people like Vash and Dean, each game would just become "do you swear or do you not swear?" if no boundaries are set (whether hard boundaries or group consensus).
Agreed that the shitposting has gone a bit far. Gifs and shitposting can be fun, but gifs for the sake of gifs is just annoying.