While that's true, I'd argue that the majority of the population isn't informed/intelligent enough to know the difference, which in my mind is the issue. Most will read an opinion piece and go off and parrot its contents as if they're fact.
That's a very ivory towerish take. Most people know full well what the difference is between opinion and fact. They just choose to ignore it as it suits their purposes better. The big difference in terms of left and right politically in the US is that the right will buy into abhorrent behavior if it ultimately gets them what they want, while the left would still rather lose even if it costs real lives to pass their purity test.