The game was fine 75, 50 and 25 years ago and it is still fine now. The umpiring and playing have gotten better over time.
Most of this is coming from the media, who have convinced the fans that something just has to be done. IR in football is a joke. Review everything or review nothing. I hate it in the NFL, I hate it in basketball ("Lets go to the monitor to see if the toe was on the three point line"
), and it will be even worse in baseball.
The umpires better tell them to shove it.