I remember reading a comment that said they half expected this to be a 'Door in the Face' technique (or a different one with a different name, can't recall) wherein Reddit was being a clever sales person by starting high and then going low, because the true goal was to just introduce a pricing plan to begin with. If they had just started with a pricing plan, there'd be pushback and they might have to rescind it, but if they started with something ridiculous and then walked it back/lowered it to something reasonable (their goal the entire time), they could save face and say "hey Reddit we heard you loud and clear and you're right!" and Reddit could go "We did it Reddit!" - I thought that seemed very plausible at the time.

Then I thought maybe it was just Hanlon's Razor. They were just being stupid. Turns out it was a little of both malice and stupidity.