Some Chrome apps aren't just a few specific browser features though, they're literally full packages that you download that have the ability to go through your

Some Chrome apps aren't just a few specific browser features though, they're literally full packages that you download that have the ability to go through your files, run native code, access to bluetooth, USB, the ability to embed a WebView (like with Android), access to everything extensions can do and more. Even some of the "bookmarks" add extra functionality to a site that wouldn't have been able to be granted otherwise, like unlimited storage, access to the clipboard and the ability to run in the background.