Yes, when Russia purges non-Kremlin-aligned churches from occupied territories it is ethnic cleansing.
Russia purges non-Kremlin-aligned churches from occupied territories
Russians have started to forcibly integrate religious centers in Russian-occupied parts of Ukraine into Kremlin-controlled churches and mosques, the Ukrainian military's National Resistance Center reported on Dec. 26.
According to the center, the Russian-state-funded organization "Russian Association for the Protection of Religious Freedom" is operating in occupied territories to rid them of non-Russian-state-aligned churches.
The organization has been auditing the properties of Protestant and Orthodox Church of Ukraine churches, as well as mosques that are not under the control of the Russian-state spiritual administration of Islam.
https://finance.yahoo.com/news/russia-purges-non-kremlin-aligned-022557827.html
If that link unlike 99% of what you post is factual then yes it should be denounced as well