Extremely happy to see the Russian forces buckle so greatly. These past few weeks to me are strong signs of serious impending trouble for the Russian regime. The pressure on Putin will now become tremendous, as both the undeniable military failures and the economic implications of the end of Russian gas in Europe support his removal. I simply do not see a way for a man who now stands between 100's of billions in revenue in both Europe and Russia AND who is the driving force behind a deeply failed and embarrassing military operation to stay in power (or indeed, alive) for long.
He may have some success in the short term, because he has convinced a meaningful part of Russia that the operation is of limited scale and thus downplay or deny any significant losses. However, in the long term I believe the economic impacts and his exposure as a fraud rather than a strategic genius as well as grievances over the loss of Russian status will likely cost him.