Interesting! Do you have a screenshot? It’s the first time I’ve heard of it being that good. That’s obviously not like iOS 10, but it is usable.As another data point, my iPad 10.5 lasted about seven hours on a full battery with iOS 16.
My 9.7-inch iPad Pro is at 10-11 hours of light use on iOS 12, so 7 on iPadOS 16 doesn’t sound poor, but like I said, I’ve read that people get worse numbers.