leocg, it would also great, if this feature would work with built-in frames, where user can read PDF ebooks, for example like this Fb2BookFree books database. There are tons of ebooks, and if I want to read them in the dark room, all this brightness of the whole page is not what user wants, you know.
@alfredo-b-face There's a fix. If you can save the webpage as pdf, you can still copy. Though, it would break some lines of HTML code for a bulky website but will work for Facebook.
Otherwise, if you have desktop, the best option will be to download a copyright protection remover extension.
Good Luck!