I'm not exactly sure what I'm looking at here, since you provided the screenshot, which I assume you took, could you explain? What is Free speech Forest, is this a Matrix/Telegram/Discord?
What makes you think it is connected to 09A or Neo Nazis? If you believe it is because of the skull face mask, that is a common thing within the 764 group, which does have affiliation with 09A, however, it is also seen in GIH with Batrick Pateman
While yes, those who wear these things are usually edgelord faggots, it doesn't always mean they are directly related to 09A.
Could you name the user who has the screenshot of bu5t selling CSAM to Manglegirl, and what server/social media circle they are part of?
*edit*
Upon linking the post to this dox, kevin (the guy complaining about bu5t in the GIH discord leak) is Nikola Uros/Isaac Kate, aka Isdaqate, someone who is a massively notorious CP spammer. You're really going to need evidence to supplement your claim considering who in particular has an axe to grind with bu5t.
Not that I don't believe you, I kind of have to with the claim you've made; but you're going to need a smoking gun with that sort of albatross weighing down your claim.