The "Exit Velocity" section lists recorded speeds of batted balls broken down by batter, showing their maximum and average speeds. Notice there are a lot of players for whom the average ball they hit comes off the bat at 90+ mph. The "Hard Hit" column lists how many times each player has hit a ball that came off the bat at 95+ mph.
Keep in mind also that balls are also thrown quite hard in baseball, and an important part of a fielder's job is catching balls thrown by teammates.
https://baseballsavant.mlb.com/statcast_leaderboard
The "Exit Velocity" section lists recorded speeds of batted balls broken down by batter, showing their maximum and average speeds. Notice there are a lot of players for whom the average ball they hit comes off the bat at 90+ mph. The "Hard Hit" column lists how many times each player has hit a ball that came off the bat at 95+ mph.
Keep in mind also that balls are also thrown quite hard in baseball, and an important part of a fielder's job is catching balls thrown by teammates.