I follow a vegan diet and the amount of people that go on about protein or calcium is ridiculous and just shows they are totally clueless.
The RDA for protein isn't that big at all, many veg contains protein so before even getting onto to nuts, seeds and pulses I've had half of the RDA just from veg.
Calcium is in way more foods than just dairy, I had figs in porridge for breakfast made with almond milk. For lunch I'm having a salad with lots of leafy greens with a dressing made from tahini, so I'm doing just great with calum and getting it from a variety of sources.