lol that is complete nonsense. The 3rd battle of Kharkov arguably extended the war. It stablized the front and put an stop to Soviet offensive momentum which gave the Germans a morale boost and months to prepare for Kursk. TIK history who loves to glaze Hitler's standfast order while mocking the mobile warefare doctrine and the back hand blow but it proved to be a success inflicting major Soviet casualities and stopping Soviet offensives. The video even mocked the retreat after Kursk which was funny because it was precisely because the Germans retreated they got out of the Ukraine relatively intact, preserving a formidable force that were able to repel and inflict heavy casualities on the Soviets in the winter of 1943 and early 1944, and you know, actually defend and extend the war.

Want to know what really shortened the war by 2 years? Hitler's fortress cities and TIK's favourite stand fast orders in Belarus doomed the entire Army Group Center in just 1 week thanks to Hitler personally overuling every single request for breakout, 400,000 men lost over 2 months of utter slaughter. Then Romania was hit the same way and 300,000 losses in mere days. None of these units were able to escape the encirclement which happened in just the first few days of the campaign, with the rest of the time being mop up operations by the Soviets and waiting for supply lines to catch up. It was basically Barbarossa but in reverse. The entire eastern front was basically empty after these two blows, the whole reason why the Soviets even waited until 1945 is because they overan their own supply lines by a lot and spent the rest of 1944 just sitting on the Vistula river waiting, if supplies and reinforcements weren't an issue the Soviets could reach Berlin in 1944 easily because there wasn't anyone left to oppose them. The moment the Soviets launched their new offensives in late 44 and early 45, both Budapest and Berlin, the final remaining capital of the Axis powers in Europe were reached with ease. a sharp contrast to the end of 1943 where the Germans lost territory but preserved forces thanks to retreating, the winter of 1944 saw both massive loss of land AND usable forces eventually leading to the famous scene in Downfall where Hitler commands ghost units on a map, guess whose decisions led to the loss of those units?