On the opposite bank of the Sumida River lies the Asahi Beer headquarters (1989), a strange building with a golden sculpture mounted on top of a granite-plated black box. It was designed by Philippe Starck, and completed in 198g when the Japanese economy was still going strong. The sculpture, with no clearly defined use, is a clear representation of its time. Today, the building is known as the 'golden poo', a reference to the shape of its crowning object.
To build a folly is essentially to do something a second time, something at an inopportune moment. That something is always the memory of something forgotten, about which we can paradoxically say "There it is again."
Follies were misunderstood, purposeless constructions. They were often only small, extravagant gestures in a garden, easily whisking off the imagination to distant lands, a sort of time capsule built to awaken the memory and induce surprise in passers-by. They marked locations, organized secondary paths in a park, or simply predicted the arrival of better times—a demarcation, a sacred spot, a mysterious trail, a hill whose tragic rocky nature begged for a tower, a party, or the arrival of summer.
“It is demonstrably true that things cannot be other than as they are. For, everything having been made for a purpose, everything is necessarily for the best purpose.” — Professor Pangloss
Swearing or saying that something "is cancer" or "is the Vietnam of X" or some other highly emotionally loaded phrase seems to be particularly effective
Talk-up prestige/accomplishments/titles
Use an authoritative tone and/or style
Write things with an angry tone or that are designed to induce anger
Write frequently
Get endorsements from people
Write about hot, current, topics
Provide takes on recent events
Use deliberately outrageous / controversial framings on topics