Fruit needs to be eaten in order to procreate. By eating eggs&nuts you're not only taking a life, you're denying it from ever happening - that's why you're not supposed to eat eggs&nuts by the bulk (for proof, eggs/nuts allergy is pretty common and even can be caused by over-consuming). I'm not saying few nuts here and there is bad for you nor is the common egg. However, they were never such a huge part of Grok's diet like many Primals around here.
It's also worth mentioning that almonds were originally pretty bitter and toxic until men did his voodoo on them.