Didn't say blackmail the fediverse. I'm saying blackmail the company trying to spread CSAM.

Ohhhh okay. Gotcha. There is one tiny problem like this.

On the Dark Web, you treat your identity like your password, you never give it out under any circumstances. And the norms in black markets reflect this, including the norms of transactions.

That means the seller doesn't know who the buyer is, and the buyer doesn't know who the seller is, and the exchanging of such information is a serious fuck up. Sellers don't want to know, as such knowledge can be a vehicle for the feds to charge them with a crime.

Now sure, a bad seller could turn around and blackmail the company, but only if that information gets leaked. This can be surprisingly easy to do, as there are avenues of info leakage that will catch out newbies, but anyone actually experienced with dark net transfers knows the score: no screen sharing, vet all screenshots carefully, don't use your real address for deliveries, don't use your home (or work) connection for the transaction, etc.

And again, you don't derail a movement. You try to own it if you really care.

Don't know what you mean by own here. Control? Maybe but that depends on your own position and what benefits you.

But even then, it's not worth it. XMPP has been "competing" for far longer and likely had more success up front than Lemmy or Kbin.

XMPP is an IM standard, is it not? What that does and what Lemmy/Kbin do are very different.