Law of Ukraine "On protecting the functioning of the Ukrainian language as the state language". Now show me where it makes the speaking of Russian illegal.
Wikipedia censors a lot of information. For politics, it’s not a reliable source of information.
https://www.nytimes.com/2023/04/22/world/europe/zelensky-russian-ban-ukraine.html
We’ve already discussed the banning of Russian culture and it is confirmed.
The provision, which entered into force on January 16, is stipulated in article 25 of the law. It requires print media outlets registered in Ukraine to publish in Ukrainian. Publications in other languages must also be accompanied by a Ukrainian version, equivalent in content, volume, and method of printing. Additionally, places of distribution such as newsstands must have at least half their content in Ukrainian.
https://www.hrw.org/news/2022/01/19/new-language-requirement-raises-concerns-ukraine