Either that guy is ESL or a fucking retard who doesn't proof read his own "rigorous" article.
Perhaps the latter.
And for a rigorous piece there's not a lot of rigor. Can't even decide whether he's criticizing the PKK or the PYD or both.
It's a lot more than "the end" – it's more like the center. It's a curious mix of ML vanguard party organization, communes, municipal councils and parliamentary politics.
People aren't dupes just because they aren't leftcoms. There was no leftcom leadership – there was the PKK and the PYD. Typical of leftcoms to complain about these sorts of things when, of course, they wouldn't touch the whole mess with a ten-foot pole, and are proud of it; only then, they have the audacity to denounce it as opportunism, ethno-nationalism, and so on. Yessir, no one is as communist as you; similarly, no one is as impotent either. Small wonder, faced with Daesh or the PYD, the choice wasn't left communism.
Millions have fled a brutal civil war, the ones who remain likely cannot flee for a variety of reasons or have no way out, and all you can do is sneer about how the "dupes" aren't supporting (left) communism. You talk shit about how you'd build a revolutionary party, but as you say, it's a pointless enterprise. You're a fraud. You have nothing to offer Syrians or the Kurds, yet you denounce their choices anyway.
Moreover, you criticize others for giving even principled support to a movement which is carving out a livable space in otherwise terrible circumstances; all for self-aggrandizing purposes, since, as you admitted, it's a shitshow. If the working class is either displaced or starving and dying in a war, then perhaps that could explain the lack of a communist movement. Maybe there was no communist movement beforehand because Assad was a piece of shit running an ethnic minority dictatorship? Just a couple of thoughts to juxtapose your ideological wanking.
Ergo, perhaps it's not a deadly sin opportunism to consider democratic confederalism worthy of some support. Not uncritically or without exception – Ocalan's cult and the theoretical "improvement" of the PKK's MLM with Bookchin's libertarian municipalism being clear issues – but nonetheless, it should be enough to acknowledge that, due to many factors surrounding the civil war as well as the war itself, they aren't going to get anything better. For those who aren't so far up their own asses that the answer to everything is left communism, it's a rational choice, not a betrayal.