It’s not about the new App Library feature itself to be honest. But its location in UI makes it so irritating. Really hard to ignore something you don’t need popping into you eyes bunch of times every day instead of something you’re looking for.
Users having one or two application pages on their iPhone screens probably not even understand the issue. They just don’t go there. Also there is no reason to complain about widget screen — there is no need to swipe pages left when you’re directly heading to a specific page.
However, going to the last (the rightmost) page after unblocking iPhone you swipe harder to jump over other pages. And now instead of the desired application page you land on App Library page. And this happens many times a day.
That’s why widget page don’t need to be hidden — it’s hidden already, but App Library page needs configuration option to hide it.
By the way, I have sent my feature requests to Apple. I also need widgets to show the next alarm as it used to be before. Neither new Calendar nor Clock widgets show alarms.