Yes, commercial nuts are generally heat dried, specially when shelled. But we can buy directly from the producers and ask them if they have been heat dried or not. Generally, when in-shell they are ok.
In "Instincto" we don't care about nutrients / anti-nutrients, just like all animals don't care too - they could not care anyway since they don't know about it. Everything becomes noxious (anti-nutrient) when eaten in excess. The key element here is the dose. The alimentary instinct tells when the optimal dose is reached and it varies with current and individual body needs.