I was an avid user of 4chan, not Tumblr.
> I'm speaking of what I have observed among a cohort in which you have, I repeat, affirmatively disclaimed membership, rendering your observations of your own behavior moot in this context.
You wrote:
>in that the deepest and most shameful secret of both websites' most avid users is that they have always been both websites' most avid users.
The plain reading of this claim is that the power users of both websites used both websites. I have no reason to think that this is true, and you haven’t made any argument as to why you think it is true. The way you are reading what you have written would make your claim tautological: i.e. “The users who used both websites used both websites.”