If I'm understanding you correctly, it's fine to use Evernote for this purpose. When you clip an article from the web, or a selection from a web page, Evernote

If I'm understanding you correctly, it's fine to use Evernote for this purpose. When you clip an article from the web, or a selection from a web page, Evernote doesn't just link to the original web site, it creates a wholly new copy of the content in your personal Evernote database. It stores the URL of where the content originally came from, but that's just metadata for your reference/information, and when you share a link to the clipped content you're sharing a link to content stored on Evernote's servers, not the original URL. After you've clipped content into Evernote it makes no difference if the original web site disappears.