I noticed halfway through my last supermarket trip that I, too, had been ignoring the stupid arrows at the ends of the aisles. No Karens berated me, though. It wasn't even crowded enough to matter, not that such trivial matters of reality interfere with a Karen tantrum. But I have seen people on Facebook piss and moan about people daring even to pass them in a one-way aisle. While they fumble about weighing prices between cans of stewed tomatoes or whatever, their fat ass entitles them to hold up everyone else.
I had to stop looking at Facebook. There is a particular group I am in for my area and I was astonished at how everyone in it had become Karen!