season. Thus, according to your own posts, he had never used steroids at age 33.
Furthermore, if he started using steroids after the 1998 season, he did not start accruing stats until the 1999 season started. By that time he was 34 and 9 months. So for the sake of accuracy, I rounded up to 35.
How is so difficult to understand?
But if you want to use 33, that's fine. According to fangraphs, he was slightly better than Hank Aaron at age 33.