>For the "actively supported", where are you getting that information?
Directly from Crimeans. I have visited Crimea last year as a tourist and talked with them personally (in Massandra and Alushta, btw the wine is really great, recommend trying it). Try watching 2014 videos, for example this one is before Russian forces have became active:
https://www.youtube.com/watch?v=atm0W5wA2y4
If you don't trust my anecdotal experience, then how about "The Crimea conundrum: legitimacy and public opinion after annexation" published in the Eurasian Geography and Economics journal? Or how about "To Russia With Love" article published in Foreign Affairs? They both confirm strong local support in favor of the transfer.
>My impression (from friends in Kiev) is that it's universally condemned.
I hope you understand that your friend quite probably is really biased regarding this issue, right? Always try looking outside of the media narrative (one may call it soft propaganda), usually world issues are far more complex than the version painted by media.