You have entered a Marxist community, not an anarchist community. Members of this community are expressing their frustration with the ever-growing swaths of anticommunist and antirevolutionary liberals who describe themselves as anarchists, but who have little to no actual engagement with anarchist ideology. They have expressed that this frustration is derived from these people's refusal to read theory and to educate themselves on the history of anarchism. They are not criticising anarchist ideology, they are criticising people who claim they are anarchists but refuse to actually learn anything about anarchism.
You are making broad, sweeping statements condemning the Marxists in this community for their beliefs, and seem to be reading their frustrations as personal attacks and attacks on anarchism. Perhaps you should re-examine your standpoint here and go read some elementary anarchist and leftist theory. Here are some recommendations:
Anarchism and Other Essays by Emma Goldman
Principles of Communism by Friedrich Engels
An Anarchist Programme by Errico Malatesta