I can accept that, depending on where you put the limit between tactics and strategy. He was good at wining battles and campaigns. He was bad at picking people to run the countries afterwards.
1. He never lost a battle and conquered more territory than anyone in history, all while leading from the front. He's considered the greatest military leader in history by most every other great military leader in history (are you a better judge?)
2. Many of the Diadochi (his bros) went on to great success, and he picked all of them.
People love to be contrarian but it can get ridiculous. Claiming that Alexander the great wasn't actually so great is just boring.
No question that he was both lucky and a despot.