I know Adobe explained how this works, and marked "Opening multi page PDF into Illustrator" as 'Resolved' in April 2019, but it isn't resolved.

You flip through the pages, and stop on the one one you want to open; that is the page that should open. If you want to add in a range, thank you for giving us the option, but the text field should change to match the current page selected in the preview.

The current setup is counter intuitive for new people, and works contrary to years of previous interface for the experienced.

Thank you.