The keto crowd seems almost like a cult sometimes, there is pride and defensiveness. Veganism isn't the only adopted diet people get attached to. Like that millionaire ex-Googler's blog post the other day, sinking most time into an "is it keto" app. It wouldn't have been out of place on The Onion.
Keto eats vegetables, nuts and also berries in limited amounts. Doing keto spinach, kale, broccoli, lettuce, cauliflower, brussel sprouts, avocados, squash and many other non starchy vegetables are core.