webviews for clicking arbitrary links in apps like instagram or gmail are absurdly restrictive. i lose my context, cookies, and regular tools (bookmarks are gone, sharing often overridden, etc)
In many cases I'd like to stay within the app. Those in-app Safari Webviews allows that. And if it is a website I'd like to browse in my usual, more permanent browsing evironment I always have th eoption to do so.
This two step approach is more useful to me than always opening links in the browser.