My immigration timeline is the same and since 2008 I go to Kiev every year and things do change. Some for worse, some for better, some changed for worse and then for better. I think I understand what author meant by youthful energy. It's there all right. Despite everything there are happy young faces on the streets and in parks. Funny kids in rad glasses and bow-ties (and when I was teenager sporting long hair was asking for trouble). Chasopys co-working space is abuzz with people collaborating either in person or over internet. New attractions, new places, new events. I hope this energy won't dry out.
Kiev is not as bleak as described in parent post. Life is fucked up by war but the city is worth visiting. Worth moving there too if you're on adventurous side of expat tribe.