Back in the 90s when I got on, so much of traffic was exchanged at MAE-West or MAE-East, and a backhoe in Iowa could make nearly all the cross-US traffic go through Europe and Asia instead.

These days, there are lively public internet exchanges up and down both coasts, in texas and chicago and elsewhere. A well placed backhoe can still make a big mess, many 'redundant fibers' are in the same strand, and last mile is fragile, but if my ISP network is up to the local internet exchange, there are many distinct routes to the other coast and a fiber cut is unlikely to route my traffic around the world.