Nicolas,
I'm looking and _maybe_ I've missed it. If so, I genuinely apologize, but it _appears_ that you take issue with the use of the words 'anarchist' and 'anti-capitalist'.
I'm just _strongly_ suggesting that you may have misunderstood the original toot that you responded to.
I'm 98% confident the original poster wasn't making a political statement but more a reference to the organic nature of federated networks.
If your issue was with something else... It's unclear.