It's more than a little sus that he hasn't even been banned from Youtube when far more moderate figures have faced far worse deplatforming.

I thought he was banned, but it's not necessarily suspicious. If I were a leftist and in charge of deplatforming, I'd help the most extreme elements (see also how they help Richard Spencer) because they are no threat to ever get anything done.

while Nick remains untouched for full-fledged Holocaust denial. Both are 1A protected speech but the latter would seem to be a much bigger deal especially since it's outright illegal in several countries.

Not in the US. Only retarded countries criminalize historical revisionism (but not all do, hence the US), even when it's not done in good faith.

Disclaimer: from what little I know about the AJ case, seems very wrong to me, especially the draconian judgment. But if you started to accuse actual Holcaoust victims of being crisis actors and paid by the deep state, and then they got inundated by death threats (as people in the AJ case claim they are), then you would have a comparable situation.

I do think that NF is a fed. However, "they're not deplatforming X so X must be a fed" is a recipe to be manipulated by the powers that be, who can just cynically decide to ostentatiously allow some people to speak to make it appear that they are feds.