I know some Ukrainians who say the exact opposite— Russian was taught in schools, all the big important jobs went to Russians, at firms where Russian was spoken, government business was conducted in Russian, and so on. It’s curious how these accounts can be so different, so I’m going to choose to believe the folks I’ve met in person on many occasions.
Russian was and is used because it's a common denominator, like English here in Canada. French is actually forced into our education, media and public jobs. But yet, English is a standard language in companies, government and so on. Does it mean that Canada "exterminating" French?
> I’m going to choose to believe the folks I’ve met
It's totally up to you who to believe. Just make sure that what they say matches reality. And reality is that Russian is still used in majority of Ukrainian companies as standard language, even after 30+ years of independence. We work with contractors from Ukraine and they all communicate in Russian perfectly well.