Yeah, I’m pretty adventurous too and not squeamish. But there’s some things like those particular veggies that just weren’t meant to be eaten by humans! I also dislike mushrooms unless they’re sauteed or otherwise cooked. The spongy texture and moldy earthy smell of the fresh ones I don’t like. Also some veggies that I like in general don’t fare well as tempura, say. Starchy stuff like certain squash, yams, etc. Mushrooms also don’t fare well when tempura’ed.