Earlier quoted context omitted.
"Very few people on this thread read and understood the article." I started to read the article, and then thought, "I know this, who doesn't know this?" and stopped. "The point is making better use of the RAM you do have by taking pages you'll almost never touch and spilling them to disk so that there's more room in RAM for pages you will touch." Exactly. Who with any technical experience in this day and age doesn't…
In theory swap is useful, in practice it can be less so https://news.ycombinator.com/item?id=16147634
If I hit my thumb with a hammer, that doesn't mean the hammer isn't useful. The edge cases with swap are also entirely useless arguments against swap.