“Jumping the shark” is the term for this. I remember watching Happy Days when the Fonz did just that.

Do you think they care about function? Are you not already aware that destruction and mayhem are the points? These a-holes are not here to serve or help the public, they are here to cause as much damage to the US (and US interests) as possible. The wrecking-ball of Speed and Confusion are among the tactics used. The plan seems to be: once the corpse is bled and torn asunder, it’ll get divvied out to the other richer a-holes (donor class) waiting for their cut whilst the US as a superpower is severely diminished or wiped out. Unfortunately for all involved, it appears to be working.