Mariinka is... 1 km from what were the front lines at the beginning of the war. Congratulations Putin, you have sent hundreds of thousands of men to die to move your border six tenths of one mile to “liberate” a now flattened former city.
In fact, it's completely refuted by even the BBC:
https://en.zona.media/article/2022/05/20/casualties_eng
39,424
Russian casualties corroborated by publicly available data as of 15 December
Mediazona, in collaboration with BBC News Russian service and a team of volunteers, continues gathering information on the Russian military casualties in Ukraine. The figures we provide are sourced from publicly available information, including social media posts from family members, local media coverage, and official statements from local authorities.