I strongly agree - this is something I really dislike about kindle compared to kobo. Seeing page x of y is relatable and meaningful. Minutes left is utterly meaningless, unless you read at precisely the same pace on each page, and do not put the kindle down to do something else. I also love the option to see the percentage read on the Lock Screen. Omg my iPad keeps capitalizing Lock Screen and I have tried to retype it so many times but it keeps reverting, so I'm leaving it.
I also really miss the progress bar from Kobo (which the Kindle used to have, about eight years ago). I keep hoping Amazon will fix these things, but they haven’t yet.