I'm not digging at all, this is a position I feel very confident in defending. I could do without your condescension though.
I'm not excusing theft. Theft involves depriving someone of something that belongs to them, copyright infringement never does that. I'm also not advocating for copyright infringement, I'm advocating for doing away with the laws that establish copyright in the first place (I'd accept various other positions like "amend the time limit on copyright down to a year" - though I'd argue there's not much point to retaining copyright at all at that point).
The relevant question is "what are the odds a particular work is part of my cultural background", but "what are the odds that a particular work in my cultural background is copyrighted without a license to create derivative works available either freely or under fair reasonable and non-discriminatory terms". Those odds are approximately zero, everything is copyrighted these days, licenses to create derivative works are almost never available for notable cultural works (or really anything other than open source software, and wikipedia).
If you're a kid growing up Pokemon, and not part of the 0.001%, you can't afford a license to legally make up stories involving Pokemon. That's fundamentally unjust. Being able to tell stories about our experiences is fundamentally something that we should be entitled to do.
This isn't the case of a nominal, affordable, cost like food. We absolutely hold that food should be available to everyone at a price they can afford (and yes, if they can't afford it we should still feed them - see various UN resolutions and so on about food being a human right). This is the case of "you can only do this legally by making bespoke negotiated business-to-business style deals for huge sums of money" when it should be a right widely available.
The status quo is just that people break the law and make themselves criminals (intentional copyright infringment is a crime, and that's what you do when you write "fanfiction" without a license), and that's not right.