This fun thread about oxymorons has grown into an important discussion, one that clearly needs to be had globally, not just in the bass community. Throughout human history there have always been lies and on a larger scale, disinformation to influence populations; ongoing PSYOPS (psychological operation) campaigns. Propaganda. By strict definition, PSYOPS are schemes deployed against enemy forces or populations, however, they have more often been used against the perpetrators' own populations.
These methods took a giant leap in effectiveness when Joseph Goebbels was appointed Hitler's Minister of Propaganda. The only way I can understand how a country's citizens could cooperate in something as evil as the Third Reich is that they were skillfully manipulated into a worldview in which horrible things made sense. Germany would be fine if it weren't for those Jews, or gays, liberals, intellectual elites. Fear was the primary emotion being manipulated.
Since then, the technology and channels of communication have blossomed to the point where blatant disinformation is created and widely distributed everywhere. How can one segment of the population have hardened opinions so diametrically at odds from another whole segment? You can come up with any number of examples off the top of your head, e.g., opinions about climate change, immigration, even which "news" outlet is "factual!" If you're white and afraid the darks are encroaching on your privileged status, there's a political faction exploiting that fear for their own gain. A politician is raping babies in a pizza shop?
I see this as the result of PSYOPS campaigns, large and small, waged against our own population, segment by segment. Loud blabbermouths that shout over each other on TV. Barrages of ridiculous lies are tweeted. Chain emails that are easily debunked are forwarded around for years and accepted as fact, probably because 1.) they play into peoples' fears, 2.) few have the time, interest or energy to do the minimal research it requires to sort the true from the false and 3.) it's a lot easier to be fed a simple, "talking point" "fact" that supports your already-held worldview than it is to sort through the complexities of issues and reach an actual informed opinion. And: Opinions should change. If new information becomes available that corrects old information, it needs to be incorporated. At one point the evidence that the earth revolves around the sun and not the other way around became irrefutable. Too bad for the people who were persecuted for the new "opinion."
So I try to read a spectrum of information outlets to sort through all the BS floating around, skeptically. Do research into information presented as "facts" to arrive at opinions.
So, I like the term "fact-based opinion," BUT, as the previous writer notes, the word "fact" has been bastardized and is now flung around to the point it's meaningless.
Not sure there's a solution; the horse has left the barn and it's a brave new world.