I'm not telling anyone to do anything, I'm stating my opinion about what I think works and why.
Different things.
And since you mentioned 196. It's still a decent example. I have 196 blocked because for me it's just noise that I don't want to see, because for me the content there has zero value.
The fact that I can block it completely (for me), get the result that I want and yet have that not effect anyone else's use of it at all is literally a good thing.
I personally find the entire sub worthless because of the almost total noise to signal ratio problems there, but that's personal preference on my part only, which I'm entitled to and merely means that I don't personally find the place useful. Having these sorts of things separate means that it works for everyone regardless of their preferences.
Also, If I did still wish to see 196 occasionally, I can choose to either just go there, or unblock it temporarily, and nothing I'm doing effects anyone else at all.
None of this is telling others what they're allowed to do, it's the opposite.
196 is a practically random community anyway, it's chaos and there's no real way to "drown out" the content internally with memes or anything because the memes are just as much the content there as anything else could be.