Oh come on. When Black Flame was published no one suspected that Michael Schmidt was a white nationalist. Moreover, there was nothing in the book itself which suggested he was -- which in part explains why it took many class struggle anarchists a long time to accept the evidence.
For someone who can scan ancient and boring walls of text for any possible negative mention of Proudhoun, your reading comprehension of my post is poor. I said "in 2019". I understand why people were excited about Black Flame when it came out. But if you're giving that book as an intro to interested people, in 2019, when we already know the co-author is a fascist, you're a fucking moron.
The open question on Black Flame is how much of Michael Schmidt's secret white separatist views and priorities become intertwined into the research and outlook of the book. This might not even be possible to know or may not be possible unless one undertakes a project similar to BF.
I guess that it would have been more accurate had I written in my comment above that very few anarchists are likely going to suggest books authored or co-authored by Schmidt for study rather than "no anarchists" are going to suggest them for study since Berthier's comments on BF demonstrate a continued willingness to study and engage BF, even if only by way of critique of it's theoretical conclusions.