BRICS can win economically if they have the infrastructure to do so. What has NATO done to destroy Russian critical infrastructure?
"Ukraine" has done things such as hit oil refineries nearby with drones, yes. (e.g. https://www.reuters.com/world/europe/several-people-injured-drone-attack-industrial-sites-russias-tatarstan-agencies-2024-04-02/)
I can see why TFM would be disheartened, but if Russia is winning strategically as he said, why would they feel the need to rush to end Ukraine? They aren't at risk to lose infrastructure yet. To me it seems they're not worried about winning the larger war.