Based on my research, here is my analysis of the claim:

Reasoning:

• Ukraine has enacted language laws promoting Ukrainian as the state language, but these laws do not ban the use of native or minority languages. The 2019 language law requires that national print media publish a Ukrainian version of equal scope, but it explicitly permits publication in other languages¹.
• The Ukrainian Constitution guarantees "the free development, use and protection of Russian, and other languages of national minorities of Ukraine"². Article 10 and Article 11 explicitly protect the linguistic identity of all indigenous peoples and national minorities².
• Publications in the languages of national minorities are exempt from certain requirements when funded by state or local budgets, and specialized bookstores established for national minorities are exempt from the requirement that 50% of books be in Ukrainian³.
• The claim that Ukraine is banning native languages closely mirrors Russian disinformation narratives. Russia has falsely claimed that "the Russian language was banned" in Ukraine to justify its invasion and occupation policies⁴. In reality, it is Russia that has been banning the Ukrainian language in occupied territories⁴⁵.
• While Ukraine's language policies have been criticized by some international bodies for potentially limiting minority language use, the Venice Commission noted that exceptions for minority languages and specialized bookstores exist, even if it questioned whether some limitations were proportionate³.

Overall validity: 10%

1. Language Law For National Print Media Comes Into Force In Ukraine
2. Implementing Policies for Ukrainian Protection of Minority ...
3. [PDF] UKRAINE OPINION ON THE LAW ON NATIONAL MINORITIES ...
4. Education under Occupation: Forced Russification of the School System in Occupied Ukrainian Territories | HRW
5. MANIPULATION: In the occupied territories, the Ukrainian language was cancelled in schools because there is no demand for it — Zakharova | Vox Ukraine