Yes, as in - this is not sarcasm; the actual article title is: "Facebook's Memcached Multiget Hole: More machines != More Capacity"
Though, to argue with the article's title -- while a straightforward addition of more memcached nodes did not solve their capacity problem, the strategy of replicating nodes & load balancing read requests between them appears to be a solution to this particular capacity problem; so more machines = more capacity, so long as they are organized appropriately.
more capacity != more machines
more capacity = more machines + load distribution strategy