See, it can take a long time before a fire erupts from a natural cause but if you are aiming for it the outcome is pretty much guaranteed.
Everyone is throwing matches, at the same time, into an already burning dumpster fire.
But the fact remains that whether you are an outside instigator looking to sow discord, a citizen participating in a political flamewar, a politician looking to whip up their base, or the mass media looking for clicks, the tactics are exactly the same. You could wrap a bubble around the United States and cutoff all outside communication and you would not see much difference.
If anything pours gasoline on this fire it is the detachment of social interactions on the internet. And that Twitter is such a hotbed of political "discussion" is a sad testament to the times, considering its very design precludes the possibility of respectful, informed discourse.
They want you to be at each others throats. Same reason they assisted brexit.