[someone] longs for more comparisons of protobaby to avocados. I agree that comparing the toddler's reading speed to an avocado's could inflate its ego needlessly, but I can see other uses for the comparison, as in
Little Fathead Simpson walks through the Clive SuperTarget, coveting some awful toy or another, approaching the verge of a tantrum. Erik: "Ah, Fathead, take after avocado, your vegetable sibling, who offers up polyunsaturated 'good fats' even to the vegans among us without complaint, hoping only that we enjoy its offerings."
LFS doesn't want to share a Tinky-Winky doll with a playmate. Carolyn: "Remember the guacamole, Fathead! Recall the avocado's willingness to sacrifice its own taste to the spicy goodness around it, finding content in the contribution of its creamy texture to the whole."