I think he meant: “If Biden loses, mass unrest is more likely …”
From The Atlantic:
The Democrats May Not Be Able to Concede
If Trump wins, especially after losing the popular vote, the left may draw the wrong conclusions.
10:30 AM ET
Contributing writer at The Atlantic and Brookings Institution senior fellow
This is the era of expecting the worst while hoping for the merely tolerable. Some might say that the worst is already happening—economic disaster and 190,000 dead from a pandemic—while the president and his surrogates insist, in a feat of self-delusion, that the “best is yet to come.” As someone who has argued against catastrophism—I don’t believe Donald Trump is a fascist or a dictator in the making, and I don’t believe America is a failed state—I find myself truly worried about only one scenario: that Trump will win reelection and Democrats and others on the left will be unwilling, even unable, to accept the result.
A loss by Joe Biden under these circumstances is the worst case not because Trump will destroy America (he can’t), but because it is the outcome most likely to undermine faith in democracy, resulting in more of the social unrest and street battles that cities including Portland, Oregon, and Seattle have seen in recent months. For this reason, strictly law-and-order Republicans who have responded in dismay to scenes of rioting and looting have an interest in Biden winning—even if they could never bring themselves to vote for him.
In other words, rioters should be given a veto over Presidential elections.
Sounds like a plan!