But, then again, Barry and Iris only have five friends and they all know about The Flash, so I’m guessing Cisco (Carlos Valdes) might be disappointed but he’d bring them something back.
The only way Barry Allen can really change the future is the only way Barry Allen knows: face it head-on in the most self-sacrificial way he can.
The point is that maybe avoiding the park won’t stop the future.
But the part about being able to avoid the dramatic demise of Iris West through present decision-making is a powerful one.