Define Ukrainian. If it’s the “pure” variant spoken in Western Galicia no. If it’s the russo-Ukrainian creole actually spoken in most of Ukraine - yes. In the Donbass many people do identify as Ukrainian but its Ukrainian as the descendants of the Ukrainian SSR aligned with Russia and not the Ukraine thats a cheap copy of Poland.

Anything is possible. But probably not many. Most “ethnic Ukrainians” are native Russian speakers. Outside of western Ukraine, speaking Ukrainian is mostly just political virtue signaling. People don’t really speak it in private, they only do so in public to signal allegiance to the nationalist project and how much they hate Russia.

Yes, I knew one, but I left the Disqus comments section group they were on (I know, blast from the past) a long time ago. I don’t think I remember the name. Pretty sure Disqus comments are still around though here and there lol