>>11833629it's just incomitance, really. I recall back in the mid 2000-2010's there were tons of "guides" that were basically just:
Use this abrasive / corrosive cleaner or item to clean the contacts on your games.
They'd end up stripping the gold plating and be like "see how clean it is now!", not realizing what they have done.
People just repeated that as truth and did it for whatever game, regardless if it needed cleaning or not. I've known retro game stores that did this as well.