It did impact his ability to put his bat on the ball. Roids would definitely increase his bat speed and even if it’s just by a little the difference between being just a little bit late and on time can be the difference between a home run and a foul tip. Hand eye is a big component of hitting but bat speed is equal as…

An ERA just under 5 is not “okay”. He was pretty bad for a while so his recent performance is a pretty big contrast. Who knows if he’s doing anything but it shouldn’t surprise anyone if he was.