Depends whether you think what you consider to be the rational choice is the morally right choice. Clearly this guy, and a lot of other Ukrainians think the right thing to do is find a way to stay and contribute rather than fleeing to the very country that is committing such unspeakable acts. Especially since he doesn't have a family to look after / provide for.

I doubt he had much choice though, when your home gets destroyed and is surrounded by the enemy why not just give up and go into their country as a refugee? What should he have done instead, died a meaningless death as a civilian resisting arrest? Demanding he fight his way back to Ukraine controlled areas seems very unreasonable to me.