http://www.techradar.com/news/youtube-returns-to-amazon-echo-show-but-with-a-new-interface-sort-of

YouTube is finally back on the Amazon Echo Show following a roughly two-month absence after Google disabled access, citing violations of terms of service.

At the time, Google claimed the device created a "broken user experience," which appears to be shorthand for the way the Show originally didn't let you engage in secondary YouTube activities such as sharing playlists.