There is a large Russian speaking population in Ukraine and thus a market for Russian language books. The language law specifically allows them to be published. Russian was not banned before the invasion and is thus is not a justification for it.
Sure, there may be a large market for Russian language books, but where can they buy them when the Ukrainian government banned the importation of Russian books and culture? Do you really think and believe that Ukrainian media will supply those books and culture when the Ukrainian government is putting pressure on them to not produce them?
You are oblivious to the obvious. A ban on culture and language is a ban on the people. If my government banned importation of my language and culture and they fascistically pressured the media from producing my language and culture within the country, where would I get my language and culture needs met.
At this point, you are denying the obvious. You are salami slicing your way to tryng to argue the Ukrainian government hasn’t banned Russia, even though they’ve banned the ability to produce Russian culture within the country.