Discussion: amp-twitter losing support of Embedded Likes, Collections, Moments

[Twitter is removing support for Embedded Like, Collection, and Moment Timelines.](https://twittercommunity.com/t/removing-support-for-embedded-like-collection-and-moment-timelines/150313)

They plan to retire them on June 23, 2021 with the expectation that it only effects 0.52% of domains who use their embed.

For the retired embedded types, they will return a link instead of the previous content that was provided, i.e.

Open questions:
- Is there any action required on our part? Can we confirm if AMP documents will be proportionally affected to expectation?
- Are I2D/I2R necessary here for the affected features?
- Should we still support these retired embed types in Bento 1.0 version of `amp-twitter`?

Start with the amp-twitter component and the linked Twitter announcement; inspect how Like, Collection, and Moment timelines are represented. Done means reaching a decision on required AMP changes, I2D/I2R, and Bento 1.0 support, with any resulting implementation work clearly scoped.

Written by the indexing model from the issue text.