It’s discrediting valid concerns against card-payments. It’s invalidating how great cash is.
It’s when the worst person you know makes a good point.
And things now are so Culture-Wars-y, nobody makes solid analyses any more, that when the far-right say cards are bad, everybody jumps to thinking cards are good.
I don’t see how conspiracy theories would discredit cash over card. They often cite the same reasons any other anti-card payment people have. They just have weird reasons to need those features. If they’re paranoid about being “got” by “them,” they’re usually into the private nature of cash and all that goes along with it, same as any other privacy concerned person.
They certainly don’t hurt it as much as drug dealers and money launderers.