I think it's great that millenials are so comfortable in virtual worlds. It should be second nature to them, as these babies and toddlers demonstrate. My nieces LOVE playing with virtual pianos and simple games on the phone, and they navigate with surprising ease.
But still, we live in the real world, so it's just best to keep in mind that there're plenty of necessary learning experiences that cannot be acquired in the virtual world. So take your iphone with you WHEN YOU GO CAMPING! But go camping, fo sho.