Long and protracted is possibly the salient phrase. Julius Caesar's civil war with Pompey was neither long nor protracted and never actually involved the populus of Italy, let alone Rome.
Pompey abandoned Italy effectively as soon as Caesar entered Italy. Pompey's Macedonian strategy ultimately failed as soon as it was contested. Sure, there were the Spanish interludes, but beyond the Senate's abdication of Italy, Caesar was extremely forgiving to his opponents, the institutions of the Republic continued, and ultimately the struggles never reached Italy proper until after his death.
So I can definitely see why the author might emphasize the continued violence of the second Triumvirate ahead of the breaking up of the first.
Pompey abandoned Italy effectively as soon as Caesar entered Italy. Pompey's Macedonian strategy ultimately failed as soon as it was contested. Sure, there were the Spanish interludes, but beyond the Senate's abdication of Italy, Caesar was extremely forgiving to his opponents, the institutions of the Republic continued, and ultimately the struggles never reached Italy proper until after his death.
So I can definitely see why the author might emphasize the continued violence of the second Triumvirate ahead of the breaking up of the first.