When millions of people are playing, there are always some that think they notice a pattern, while it could just as well be a coincidence. Also, the shifting meta can give you the impression that someone is targeting your deck. Small example, Greedy Consume (Nekkers) died out as an archetype because players were starting to use Mandrake to counter Sabbath (among other things). Greedy Consume was just collateral damage, which might have given Greedy Consume players the wrong impression.
Anyhow, let's look at this from the opposite side. Why would CDPR create an algorithm that matches players against counter decks? There is no logical reason and nothing to be gained from it. Also, how would the decision be made who is going to be at the losing end? Why not go a step further and have his or her gold cards be at the bottom of the deck and throw down an occasional disconnect when they do manage to almost win. It just doesn't make any sense.
