That's sort of the elephant in the room, the west was in the best position they were ever going to be in last summer. The balance of power shifted significantly in Russia's favor since then as even western media openly admits now. If Ukraine couldn't make any progress back then it's obvious that there's no path to victory now.
Western weapons failed utterly during the Zapo Offensive, so back when they were sending weapons Ukraine was still losing.
That's sort of the elephant in the room, the west was in the best position they were ever going to be in last summer. The balance of power shifted significantly in Russia's favor since then as even western media openly admits now. If Ukraine couldn't make any progress back then it's obvious that there's no path to victory now.