zahavasdad
Alexander was not welcomed by chazal because they were happy to have a greek rule over them. Nor did they want to embrace greek culture.
They made a choice that was very shas hadchak
Go look up the story
Alexander wanted to put up a statue of himself in the BM, This was chazal’s way of preventing that
(“why put up a statue that is temporary, we will name our kids after you and that will be a remembrance forever”-I’m paraphrasing. And since the words of chazal are forever, so there are still alexanders.)