Here it is in a sentence:
By enforcing the terms of the agreement, Uber forced binding arbitration on the contractor.
If the contractor Filed a Complaint before a court in breach of the arbitration provision of the contract, Uber could have waived its contractual right to arbitration and allowed the case to proceed, but instead they forced the contractor into arbitration by enforcing the agreement. There is an obvious reason Uber elects to put the arbitration provision in its agreements and there is a reason they didn’t waive that provision when push cane to shove...it benefits Uber.