Anyone else's review times are screwed up now? Today, in my to-be-reviewed tab, my oldest illustration now say "submitted over a year ago" and my oldest photo "submitted over 2 months ago".

Same here. Many of my images, which are stuck in the review are now shown submitted over a month or two and some even over a year ago.
I hope it's not due to the AI image flood, although it would be obvious that they get review problems every now and then.