These people hold the opinion that Ukraine has spent 30 years actively trying to destroy Russianness, so I can see how some amount of such flamboyant rhetoric m

These people hold the opinion that Ukraine has spent 30 years actively trying to destroy Russianness, so I can see how some amount of such flamboyant rhetoric may exist. But overall it's not true, Russian Federation is keeping options to study Ukrainian (and in Ukrainian) on the lands that it now holds. I'm not sure how representative that is, and it is mostly about bad ideas ("Ukrainian state fruitlessly leaning towards the West") being replaced with good ideas ("Ukraine realizing that it has to play ball with Russia") and not about harming people by their ethnic situation. Behind the link is some anonymous Telegram channel. I can create one, and so can you. But the idea is sound, Russians do not want their ambitions of grandeur challenged. Still it has very weak correlation with ethnic hate. I'm not denying that propaganda creates and propagates myths because that's what it for.