That was a magnified iteration on many levels which people are not used to seeing -- design, philosophy, code. They didn't simply release a new look, they released what they believe is fixing what they felt was broken in prior versions, ie., left/Right wing bury machines, power users.

Ultimately, they released a product that wasn't ready for public consumption despite being in Beta for several weeks. Had their algorithms worked effectively, preferences to change the default behavior existed, and a stable back-end in place we might be singing a different tune.

...years...