The coverage was not the best professional quality, but the material is very succinct and important to understand why many deem America as being an empire.
In essence, unlike the empires of the past, the current US empire has updated that definition of what constitutes an empire. Per the video's featured economist Michael Hudson, who is a proud American, the US empire is one that dominates through currency creation/manipulation and making the global rules of finance capitalism. Although having the greatest military machine the World has ever known, it is the control of currency and finance that serves as the US empire's primary means of global control. As Hudson further states, the imperial military's main function is not direct confrontation with military peers, but tools of invasion, overthrow, and occupation of lesser countries such as Iraq, Afghanistan, Libya, Syria, etc. to make them client or vassal states to US imperial financial rule. Against military peers such as Russia or China, proxy wars, civil/domestic unrest, tariffs, human rights, Olympic boycotts, etc. are the primary weapons to get those nations to acquiesce to American imperial domination. If those options fail, as it has failed in the case of Russia and China, then goading WWIII is the final option that unfortunately currently appears what the US empire is orchestrating in their vassal state Ukraine against Russia.