Yep, the Russians are achieving some of their objectives, although at a great price. But this 'price' is also subjective, since most of the defeated systems are meant to be replaced, like our Mig-21 loss in 2019. Most of what you have seen destroyed were built in the 80s, ie, 30-40 years ago. Even their most modern tank, the T-90, was largely built in the early to mid 90s. The loss of armour crew and infantry is where it will hurt most because of Russia's declining population.
Neither of the two problems affect us. Our army is organised very, very differently, we have enough infantry, and plenty of air support. And we won't have any restraint when we deal with Pak or China. We are going to press the trigger when necessary. Plus we won't be dealing with the same battlefield, urban warfare, and our objectives are easier to accomplish than Russia's in a conventional setting.
Their economy will go through a temporary downturn from next year onwards, as their oil and gas marketshare starts reducing drastically. But they will bounce back by diversifying their industry and exports over the years. The global grey market will get a massive boost from all the copied stuff Russia is capable of producing. It should take a few years, but it's possible.
The world will destabilise greatly with the military modernisation of rogue states and terrorist groups. Europe could see a major increase in terrorism.