While this is partially true it is also not completely true. Zelensky is himself a native Russian speaker and the Azov battalion itself is/was 70% Russian speaking. Many Russian speakers are angry at the Russian invasion and support Ukraine. It is not so clear cut. How much support was there really in the Donbass for a violent separatist insurgency without Russian meddling? We'll never know for certain. Russian-speaking does not mean support for invasion by a fascist Russian dictatorship.