There are about 1,000 D1 baseball players each season. To list the handful who pitch and hit is anecdotal. If there are fifty players each year doing both it's still just 5% of the players. Yes, it's possible. But it's unlikely. In high school it's not unusual for the best player to be the best player and best pitcher.
Chances are no one remembers Bert Roberge unless they're an older Expos or Astros fan. He pitched for both teams. He pitched for UMaine when they went to the CWS in the 70's. I played college summer ball with him. Back in high school and Legion he was an incredibly dangerous hitter. He got to college and never swung a bat again. He didn't even DH or pinch hit in college summer ball. He was focused on pitching. Being young at the time I was shocked an alledgedly intelligent and successful (college) coach would take the bat out of the hands of such a good hitter.
On the flip side a Legion teammate who threw in the low 90's (back in the 70's) never pitched once he got to college. He was that dominating of a hitter. He got to AAA quickly before a couple of injuries did him in.
This is kind of Rod Serlingish. Imagine the concept of time and space. If the Yankees would have added you to a trade for Rod Carew you would have been starting for the Twins the following June night. Instead you step in a pothole getting out of your car at the airport the day of your September call up. You break your ankle and start your physical decline.