The old UI would let you see for updated addons how many hours or days old up to 1 week before switching to absolute date.

Especially when a new patch comes out and lots of addons are updated, it's nearly impossible to tell if an addon has been updated multiple times in one day or to reasonably keep track of when you last updated from the website.

Some of us prefer to update manually and the new UI makes it 200% harder to keep track of what is new since my last visit.