No they are ethnic russians and ethnic Ukranians
I've known a few people from the region, who despite speaking russian never considered themselves russian but always thought of themselves as Ukrainians.
The idea that speaking russian makes a Ukrainian russian was an old soviet one that had its greatest success with peasant moving to cities.
The grandparents spoke Ukrainian and their kids moved to cities and spoke russian and imagined they were 'russian' (you get a similar dynamic in Latin America with native americans moving to cities, switching to Spanish and creating fantasies about blonde grandmothers from Spain).
What you did have (emphasis on the past tense) was greater sympathy for russia in the eastern part of the country. But as Galeev described (verified by Ukrainians) that's dead and gone.
the Maidan Coup
No, it was a small protest that turned into a large protest and the president fled the country rather than face the consequences of his corruption and misrule. And there have been three free and fair elections since (not the usual scenario for a coup).
what happened in Eastern Ukraine in 2014 was a complete surprise to hi
This is true. Many, russian and normal alike, don't realize that putain is not a leader but a follower. He's not a dictator preventing russians from being free and happy, the russian public wants neither of those things. He has to give the public (many of which are boiling cauldrons of resentment) power fantasies and they live vicariously through his repression, imagining the purges and invasions they would like to carry out (see the russians here).