Please see his follow up comments years later where he reflects on the situation and agrees that he should not have been hired at that time.

He posted that in the heat of the moment while angry, but they didn’t literally reject him for a single LeetCode problem. He admits that he was just not at a point where being hired into a FAANG job would have been a good move.

That one Tweet has fueled years of internet rage from people who didn’t get the whole story, though.