https://www.theatlantic.com/technology/archive/2015/01/the-s...
IT was thrown when the system was failing at the rails layer rather than the apache layer. I believe that Ryan King and I were the last people to ever see the moan cone in production. =)
And you will be going forwards as well. People will not create horizontally autoscalable, cachachable sites as that cost money and effort for 99.9999% sites that will never need it.
True we are at an age were it is easier, more well known how to do it, and less and less costly, but still not free in money and time.