"Do you have any estimate for how many active Steemians there are in Ukraine now?"

I know for sure there are two. there are many inactive accounts in the search

there used to be more, but it was before ..
I am not limited only to Ukraine, but the entire post-Soviet space, because we are all the same in the same information sphere. But yes, emphasis on Ukraine

"Have you looked at the STEEM POD and the Steem Greeters?"

I'm reading now