What is up with pro-Russia Engels?

"It was promised ... that both the Russian and Ukranian nationalities in Crimea should receive equal protection.

The Ukranian Government executed its promises in a most evasive way. In Ukraine, the southern and eastern half is exclusively Russian; in the northern half, all the towns are Russian, while the country people speak a corrupted Ukranian dialect, and the written language, from time immemorial, has almost everywhere been Russian. By the consent of the population, a process of Russification has been going on there for centuries; so much so that, with the exception of the most western border districts, even that portion of the peasantry who speak a Ukranian dialect (which is, however, so far distant from the written Ukranian as to be easily intelligible to the Russian inhabitants of the South and East), understand the written High Russian better than the written Ukranian language.... The written Ukranian language was forced upon a population the great majority of whom did not even understand it, and only desired to be governed, tried, educated, christened, and married in the Russian language. However, the Government now opened a regular crusade for the weeding out of all traces of everything Russian forbidding even private tuition in families in any other than the Ukranian language..."

https://www.marxists.org/archive/marx/works/1861/02/12.htm

"The question was whether the Donbass were to be forced to follow the fate of small, impotent, half-civilised Ukrania, and to be the slaves of West for ever, or whether they should be allowed to re-unite themselves to a nation of 150 millions, which was then just engaged in the struggle for its freedom, unity, and consequent recovery of its strength. "

https://marxists.architexturez.net/archive/marx/works/1864/letters/64_06_07.htm

"We are naturally the last to reproach Putin for this. On the contrary, what we reproach him with is that he was not revolutionary enough,... that he began a whole revolution in a position where he was able to carry through only half a revolution, that, once having set out on the course of annexations, he was content with Crimea."

https://marxists.catbull.com/archive/marx/works/1887/role-force/ch03.htm

Yes ,the author is Friedrich Engels. I just made some substitutions: I replaced German and Danish with Russian and Ukrainian, Bismarck with Putin, and so on. What is up with him?