Steroids don’t improve bat speed or hand-eye coordination. The primary thing they do is keep players with nagging injuries off of the disabled list - Bonds missed almost the entire 2005 season after he apparently stopped taking them. Steroid use thus has some effect on longevity-based all-time records, but it isn’t like Bonds, McGwire, and Sosa were taking a magic pill that made them hit home run balls farther - which is what the casual fan has been led to believe by the typically hysterical media coverage at the time.
That said, congratulations to Judge - who just pulled off a very difficult accomplishment.
Apparently human growth hormones (HGH) do. That would explain why Jason Giambi lost 65 points off his batting average and led the AL in strikeouts the year in the early 2000s when he showed up for spring training looking like an emaciated waif compared to his prior build.