It's been pretty wild to watch the MLB go through the exact same arguments that the Cricket world went through 15 years ago when DRS was first introduced.
The game will be fine.
The game will be fine.
Sometimes it isn't really clear, like, if the ball is caught very close to the boundary line, given the size of the field, it can be tricky for the umpire to tell if it was caught over the boundary, representing the difference between the current batsman being caught out (meaning either the next batsman has to come take his place - assuming there are any of the 11 left) or adding 6 runs to his team's tally.
Some of the most memorable cricket games have had such situations.
It also adds some suspense to games as everyone waits on umpires to review data to make their call.