As much as I'd love this to be true, we get a lot of propaganda here in the West and in general both sides are burning a lot of resources. Russia had more resources to start with and can probably replenish at least some of them (manpower and tanks).
But they do have a lot of people, and if they're willing to let them die, it'll take a long time to get rid of them.
Western intel estimates 80k total casualties killed & wounded on the Russian side in 6 months in Ukraine.
Interesting. First I've heard of this.
Sounds like Putin wants the large number of casualties to not be in areas where unhappy family members rioting can affect politics.