Hmm, interesting. While I do love to eat them, it’s certainly not a requirement to use in vegetarian food. I’ve gone weeks or months without eating aubergine. Over reliance on the same ingredients suggests a lack of imagination, an uncaring attitude towards food without meat ingredients, or a passionless relationship with food. Admittedly those first two are fairly common among cooks in regions without a strong tradition of meatless cooking, but even then there are always exceptions. I’ve eaten many exquisite meals ranging from street food to Michelin starred, all without meat or aubergine.