The inconvenient truth is that such a policy didn't get any serious reversal during the reign of "pro-Russian, Donbass choice" Yanukovich. Nevertheless, Donbass only really went ballistic when the first action of post-Yanukovich Rada was to repeal the "language law" which half-assedly permitted the things I have mentioned in my previous comment.
russia is closing Ukrainian-language schools across Ukraine. Bad or Good?
What % of schools in russia are Ukrainian-language and are not closed?
You seem to be saying that this is bad when Ukraine does it, but good when russia does it. I don't understand this logic. Maybe you aren't saying so, and you ignored my "good or bad" question by accident. If so, here is where you can answer: good or bad that russia is closing Ukrainian language schools in not only russia, but Ukraine as well?